ULTRAMAR DIAMOND SHAMROCK CORP
10-K, 1998-03-17
PETROLEUM REFINING
Previous: TEXAS BIOTECHNOLOGY CORP /DE/, 424B4, 1998-03-17
Next: SEPARATE ACCOUNT I OF 1ST ALLMERICA FINANCIAL LIFE INS CO, NSAR-U, 1998-03-17



                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 10-K

        ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES
       EXCHANGE ACT OF 1934: For the fiscal year ended December 31, 1997

                         Commission File Number 1-11154

                      ULTRAMAR DIAMOND SHAMROCK CORPORATION
              Incorporated under the laws of the State of Delaware
                  I.R.S. Employer Identification No. 13-3663331

                               6000 N Loop 1604 W
                          San Antonio, Texas 78249-1112
                        Telephone number: (210) 592-2000

Securities  registered pursuant to Section 12(b) of the Act: Common Stock, $0.01
par value registered on the New York Stock Exchange.

Securities  registered  pursuant to 12(g) of the Act: 5% Cumulative  Convertible
Preferred Stock, $0.01 par
value.

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding 12 months (or for such  shorter  period that the  Registrant  was
required  to file  such  reports),  and  (2) has  been  subject  to such  filing
requirements for the past 90 days. Yes [root] No
- ----

Indicate by check mark if disclosure of delinquent  filers  pursuant to Item 405
of Regulation  S-K is not contained  herein,  and will not be contained,  to the
best of Registrant's  knowledge,  in definitive proxy or information  statements
incorporated  by reference in Part III of the Form 10-K or any amendment to this
Form 10-K. ( [root] )

As of February 27, 1998, the aggregate  market value of the voting stock held by
non-affiliates  of the  Registrant,  based on the last sales price of the Common
Stock of the Registrant as quoted on the NYSE was $3,077,942,465.

The  number of  shares of Common  Stock,  $0.01  par  value,  of the  Registrant
outstanding as of February 27, 1998 was 86,810,282.

DOCUMENTS INCORPORATED BY REFERENCE
Certain  portions of the Company's  Proxy  Statement  for its annual  meeting of
shareholders are incorporated by reference into Items 10, 11, 12, and 13 of Part
III. The Registrant  intends to file such Proxy Statement no later than 120 days
after the end of the fiscal year covered by this Form 10-K.


                                TABLE OF CONTENTS


Item                                                                        Page
                                     PART I

   1. Business.......................................................         3

   2. Properties.....................................................        12

   3. Legal proceedings..............................................        12

   4. Submission of matters to a vote of security stockholders.......        13

                                     PART II

   5. Market for Registrant's common equity and related stockholder
            matters..................................................        14

   6. Selected financial data........................................        15

   7. Management's discussion and analysis of financial condition and
            results of operations....................................        16

   8. Financial statements and supplementary data....................        30

   9. Changes in and disagreements with accountants on accounting and
            financial disclosure.....................................        62

                                    PART III

  10. Directors and executive officers of the Registrant.............        62

  11. Executive compensation.........................................        62

  12. Security ownership of certain beneficial owners and management.        62

  13. Certain relationships and related transactions.................        62

                                     PART IV

  14. Exhibits, financial statement schedules and reports on Form 8-K        63


Signatures...........................................................        72


This Annual Report on Form 10-K (including  documents  incorporated by reference
herein)  contains  statements  with  respect to the  Company's  expectations  or
beliefs as to future events. These type of statements are  "forward-looking" and
are subject to uncertainties. See "Forward-Looking Statements" on page 29 .

                                     PART I
ITEM 1. BUSINESS
                                     Summary

Ultramar  Diamond Shamrock  Corporation  (the Company) is a leading  independent
refiner  and  marketer  of  high-quality  petroleum  products in the central and
southwest  United States (the  Southwest),  and the northeast  United States and
eastern  Canada  (the  Northeast).   These  operations  consist  of  refineries,
convenience  stores,  pipelines,  a  home  heating  oil  business,  and  related
petrochemical and natural gas liquids operations.  The Company currently employs
approximately 23,000 people.

The Company's Southwest  operations include six modern refineries  strategically
located near its key markets.  Two refineries,  the McKee Refinery  located near
Amarillo,  Texas and the Three Rivers Refinery located near San Antonio,  Texas,
service Texas and the surrounding states. The Wilmington Refinery,  located near
Los Angeles,  California,  services the California,  Nevada and Arizona markets.
Upon  the  acquisition  of Total  Petroleum  (North  America)  Ltd.  (Total)  in
September  1997, the Company  acquired three  refineries:  the Ardmore  Refinery
located  in  Oklahoma,  the Alma  Refinery  located in  Michigan  and the Denver
Refinery located in Colorado. The Total refineries service twelve central states
from Texas to Michigan. The Company markets petroleum products and a broad range
of convenience store merchandise in the Southwest under the Diamond Shamrock(R),
Beacon(R),   Ultramar(R),   and  Total(R)  brand  names  through  a  network  of
approximately  5,000  outlets  across  21  central  and  southwest  states.  The
Southwest  operations  also  include the storing  and  marketing  of natural gas
liquids,   and  the   manufacturing  and  marketing  of  anhydrous  ammonia  and
polymer-grade propylene at its facilities at Mont Belvieu, near Houston, Texas.

In the  Northeast,  the Company  owns and  operates a refinery  in St.  Romuald,
Quebec Canada and markets petroleum products through  approximately 1,300 retail
outlets and 84 cardlocks.  In addition,  the Northeast operations include one of
the largest  retail home heating oil  businesses in the  northeastern  region of
North America, selling heating oil to approximately 236,000 households.

                             Merger and Acquisitions

Ultramar  Diamond  Shamrock  Corporation  (the Company or UDS) is the  surviving
corporation  in the December  1996 merger (the  Merger) of Ultramar  Corporation
(Ultramar) and Diamond Shamrock, Inc. (Diamond Shamrock). In connection with the
Merger,  the  Company  issued  29,876,507  shares of  Company  common  stock and
1,725,000 shares of newly created 5% cumulative  convertible  preferred stock in
exchange  for all the  outstanding  common stock and 5%  cumulative  convertible
preferred  stock of Diamond  Shamrock.  The  shareholders  of  Diamond  Shamrock
received 1.02 shares of Company common stock for each share of Diamond  Shamrock
common stock and one share of Company 5% cumulative  convertible preferred stock
for each share of Diamond  Shamrock 5% cumulative  convertible  preferred stock.
The  Company's  common  stock  is  listed  on the New York  and  Montreal  stock
exchanges  under the  symbols  "UDS" and "ULR,"  respectively.  UDS's  principal
executive  offices  are  located  at 6000 N Loop  1604  W,  San  Antonio,  Texas
78249-1112.

On September 25, 1997, the Company  completed the acquisition of Total Petroleum
(North America) Ltd. (Total),  a Denver,  Colorado based petroleum  refining and
marketing  company (the  Acquisition).  In connection with the Acquisition,  the
Company issued 0.322 shares of Company common stock for each  outstanding  share
of Total common stock, or 12,672,213 shares of Company common stock. The Company
also assumed approximately $460.5 million of Total's debt in connection with the
Acquisition.  At acquisition,  Total had approximately 6,000 employees and owned
and  operated  refineries  in  Ardmore,  Oklahoma,  Alma,  Michigan  and Denver,
Colorado with a combined throughput capacity of 147,000 bpd. In addition,  Total
distributed  gasoline and convenience  store  merchandise  through 2,100 branded
retail stores located in the central United States,  of which  approximately 560
are Company-owned.

In  December  1995,  Diamond  Shamrock  completed  the  acquisition  of National
Convenience Stores, Inc. (NCS). At the time of the NCS acquisition, NCS operated
661 Stop N Go convenience  stores located primarily in four cities in Texas. The
Company  has  integrated  the NCS stores with the rest of the  Southwest  retail
operations and sells Diamond  Shamrock branded gasoline through most of its Stop
N Go stores.

Ultramar  Corporation was originally formed in April 1992, to acquire the United
States and Canadian refining and marketing operations of Ultramar plc from LASMO
plc, a U. K. oil and gas exploration and production company.

                            The Company's Operations

Southwest Refining Business

The Company's Southwest operations include six modern refineries with a combined
throughput capacity of 487,000 bpd.


              Refinery / State                         Capacity in BPD

                McKee / Texas                              150,000
            Three Rivers / Texas                            90,000
           Wilmington / California                         100,000
             Ardmore / Oklahoma                             68,000
               Alma / Michigan                              51,000
              Denver / Colorado                             28,000
                                                           -------
                                                           487,000
                                                           =======

These refineries  produce primarily  gasoline,  diesel,  jet fuels and liquefied
petroleum gases.  Other  by-products of the refining  process include  petroleum
coke, asphalt,  sulfur,  ammonium thiosulfate and refinery-grade  propylene,  to
name a few.

The McKee Refinery has a throughput capacity of 150,000 bpd and relies primarily
on a  varying  blend of  domestically  produced  crude  oil for  feedstock.  The
refinery produces  conventional  gasoline,  Federal  specification  reformulated
gasoline  (RFG),  other  oxygenated  gasolines,  and  low-sulfur  diesel meeting
governmental specifications for on-road use. A portion of the oxygenates used in
manufacturing  RFG and other  oxygenated  gasolines is manufactured at the McKee
Refinery and the balance is obtained from other manufacturers.

The Three Rivers  Refinery  has a  throughput  capacity of 90,000 bpd and relies
primarily  on foreign  crude oil for  feedstock.  During the three  years  ended
December 31, 1997, the Company completed several expansion projects at the Three
Rivers Refinery, including a benzene/toluene/xylene extraction and fractionation
unit (BTX), a heavy gas oil  hydrotreater,  a demetalized  oil  hydrotreater,  a
hydrogen plant and a sulfur recovery plant to allow the refinery  flexibility in
selecting  its crude oil  feedstock and to expand the  throughput  capacity.  In
addition,  the  refinery  processes  natural gas liquids  (NGL's) from local gas
processing plants.

The Wilmington Refinery is the newest refinery in California and one of the most
modern,  technologically-advanced  and  energy  efficient  refineries  in  North
America.  The Wilmington  Refinery is capable of processing  over 100,000 bpd of
total  throughput,  including 70,000 bpd of crude oil, and because of additional
capacity  in  its  downstream  units,  up to  50,000  bpd of  partially  refined
feedstocks and  blendstocks.  The Wilmington  Refinery  operates  primarily on a
blend of  California  and  imported  foreign  crude  oils.  Given its coking and
desulfurizing  capabilities,  it is  particularly  well suited to process heavy,
high-sulfur crude oils, which historically have cost less than other crude oils.
In 1996, the Company completed several  construction  projects which enabled the
refinery  to  produce  100%   California   Air  Resource   Board   specification
reformulated  gasoline  (CARB),  and increased the capacity of the refinery.  In
1997, the Wilmington Refinery's processing stream was comprised of approximately
32% heavy sour  crude  oil,  40% heavy  sweet  crude oil and 28% more  expensive
lighter crude oils.

The Ardmore  Refinery  has a  throughput  capacity of 68,000 bpd and relies on a
varying blend of  domestically  produced crude oil for  feedstock.  The refinery
produces  conventional   gasoline,  and  low-sulfur  diesel  meeting  government
specifications for on-road use.

The Alma Refinery has a throughput  capacity of 51,000 bpd and relies  primarily
on a varying blend of Michigan and Canadian  produced  crude oil for  feedstock.
The refinery  produces  conventional  gasoline  and  low-sulfur  diesel  meeting
government specifications for on-road use.

The Denver Refinery has a throughput capacity of 28,000 bpd and relies primarily
on a  varying  blend  of  domestically  produced  and  Canadian  crude  oil  for
feedstock. The refinery produces conventional gasoline, oxygenated gasoline, and
low-sulfur diesel meeting government specifications for on-road use.

Southwest Supply and Distribution

The  ability  to supply the  Company's  refineries  from a variety of  feedstock
sources is essential to remain  competitive.  The Company's network of crude oil
pipelines provides the ability to acquire crude oil from producing leases, major
domestic  oil trading  centers and Gulf and West Coast  ports,  and to transport
crude to the Company's  Southwest  refineries at a competitive cost. The Company
acquires a portion of its crude oil requirements through the purchase of futures
contracts on the New York Mercantile Exchange. The Company also uses the futures
market to manage the price risk inherent in  purchasing  crude oil in advance of
the delivery date and in maintaining its inventories.

The Company does not maintain  crude oil reserves;  however,  it has access to a
large supply of crude oil from both domestic and foreign sources,  most of which
is obtained under short-term supply agreements. Although its operations could be
adversely  impacted  by  fluctuations  in  availability  of crude  oil and other
supplies,  the Company  believes that it is currently  advantageous  to maintain
short-term  supply  agreements to purchase crude oil at attractive  prices.  The
Company  believes that the current  sources of crude oil and feedstocks  will be
sufficient to meet the Company's requirements in the foreseeable future.

The McKee Refinery has access to crude oil from the Texas  Panhandle,  Oklahoma,
southwestern  Kansas and eastern Colorado through  approximately  1,223 miles of
crude oil  pipelines  owned or  leased by the  Company.  This  refinery  is also
connected  by common  carrier  pipelines  to major crude oil centers in Cushing,
Oklahoma  and  Midland,  Texas.  The McKee  Refinery  also has access at Wichita
Falls,  Texas to major  pipelines  which transport crude oil from the Texas Gulf
Coast and major West Texas oil fields into the mid-continent  region.  The crude
oil can be stored in tanks with a capacity totaling 520,000 barrels at the McKee
Refinery  and an  additional  928,000  barrels of storage  capacity is available
throughout the supply system.

The Three Rivers Refinery has access to crude oil from foreign sources delivered
to the Texas  Gulf  Coast at Corpus  Christi,  Texas,  as well as crude oil from
domestic  sources.  The crude oil terminal in Corpus Christi has a total storage
capacity of 1.6 million  barrels,  and allows the Company to accept  delivery of
larger  crude oil  cargos at the  terminal,  thereby  decreasing  the  number of
deliveries and the demurrage expense, the charge assessed by a ship for the time
it is delayed in port to unload cargo.  The Corpus Christi crude oil terminal is
connected  to the Three  Rivers  Refinery  by a 92-mile  pipeline  which has the
capacity to deliver 120,000 bpd to the refinery.  The Three Rivers Refinery also
has access to West Texas  Intermediate and South Texas crude oils through common
carrier pipelines.

The  Wilmington  Refinery  has 2.8 million  barrels of storage  capacity  and is
connected by pipeline to marine terminals and associated dock facilities,  which
can be  utilized  for  movement  and  storage of crude oil and  feedstocks.  The
Company  operates a product marine terminal and a dock facility which are leased
from the Port of Los Angeles and the Company  owns tanks at the marine  terminal
with a storage capacity of 980,000 barrels.

The Ardmore and Alma Refineries are supplied by 280 miles of  Company-owned  and
operated crude oil pipelines with  connections to common carrier lines. The Alma
Refinery is connected to the Lakehead/Interprovincial Pipeline, which transports
both Canadian and domestic  crude oil. The Denver  Refinery is supplied by third
party pipelines,  a 120-mile  Company-owned  pipeline  purchased in 1996, and by
truck.

Refined  products  produced  at  the  McKee  and  Three  Rivers  Refineries  are
distributed  primarily  through  approximately  3,357  miles of refined  product
pipelines  connected to 14 terminals.  The Company's  refined products  terminal
near Dallas,  Texas also receives products from the Explorer  Pipeline,  a major
common  carrier  pipeline  from the Houston,  Texas area.  Refined  products are
distributed  from the  Wilmington  Refinery  by pipeline to a network of product
terminals owned by third parties in Southern California, Nevada and Arizona, and
then on to the Company's  retail stores and  wholesale  customers.  The Ardmore,
Alma and Denver  Refineries  distribute  refined  products  through a network of
third party pipelines, 135 miles of Company-owned pipelines, trucking operations
and 11 terminals.

Over  the past  several  years,  the  Company  has  added  significantly  to its
distribution  system,  in  part  by  the  construction  of new  refined  product
pipelines to connect the Company's refineries to expanding markets and by adding
to or purchasing  additional  capacity in existing  refined  product  pipelines.
Additions to pipeline and terminal  operations over the past three years include
the construction of the McKee to El Paso, Texas pipeline and terminal, expansion
of  the  Amarillo-Tucumcari-Albuquerque  pipeline,  and  the  expansion  of  the
Colorado  pipeline to Denver.  Total storage capacity of refined products within
the McKee and Three Rivers  pipeline and terminal  system is  approximately  1.0
million barrels.  Storage capacity of refined products in the Wilmington  system
is 500,000 barrels.

In addition to Company  pipelines and  terminals,  the Company has  historically
entered  into  product  exchange  and  purchase  agreements  which  enable it to
minimize transportation costs, balance product availability,  broaden geographic
distribution  and supply markets not connected to its refined  product  pipeline
system.  Exchange  agreements  provide for the  delivery of refined  products to
unaffiliated  companies at the Company's  and third party  terminals in exchange
for  delivery  of a similar  amount of refined  products  to the Company by such
unaffiliated  companies at agreed  locations.  Purchase  agreements  involve the
purchase by the Company of refined  products from  unaffiliated  companies  with
delivery  occurring  at agreed  locations.  Products are  currently  received on
exchange or by purchase through 68 terminals and distribution  points throughout
the  Company's   marketing   areas.   Most  of  the  Company's   agreements  are
long-standing  arrangements;  however, they can be terminated with 30 to 90 days
notice.  The Company  believes it is unlikely that there will be an interruption
in its  ability to  exchange  or  purchase  refined  product in the  foreseeable
future.

In November  1997,  the Company  entered  into an  agreement to sell to Phillips
Petroleum Company  (Phillips) an interest in the El Paso pipeline system,  which
includes  the  408-mile  pipeline  from McKee to El Paso and the  terminal in El
Paso.  The  agreement  provides  that  Phillips  will  initially  purchase a 25%
interest  in the system  and,  once the  planned  expansion  of the  pipeline is
completed  in  1998,  Phillips  will be able to  purchase  an  additional  8.33%
interest. The Company will continue to operate the system.

Southwest Marketing

The Company is one of the largest  independent  retail  marketers  of  petroleum
products  in the  southwest  United  States.  The  Company  has a  strong  brand
identification  in  much  of its  21  state  marketing  area,  including  Texas,
California, Colorado, Louisiana, New Mexico, Oklahoma and Michigan. Gasoline and
diesel fuel are sold under the Diamond Shamrock(R),  Beacon(R), Ultramar(R), and
Total(R)  brand  names  through a network  of 2,114  Company-operated  and 2,811
dealer  operated  retail stores.  In 1997, the Company's  total sales of refined
products  (retail and wholesale) in its Southwest  market averaged  485,500 bpd.
The  Company  has one of the  highest  average  sales  volume  per  store in the
Southwest,  with sales per  Company-operated  store averaging 97,100 gallons per
month during 1997.

The Company operated retail stores are generally modern, attractive, high-volume
gasoline outlets. In addition,  these outlets are convenience stores,  selling a
wide variety of products such as groceries,  health and beauty aids,  fast foods
and beverages.

The total  number of retail  stores as of  December  31 for the past three years
were as follows:


                                     1997        1996        1995
                                     ----        ----        ----

Company owned and operated.......    1,127        783         857
Company leased and operated......      987        817         802
                                     -----      -----       -----
   Total Company operated........    2,114      1,600       1,659

Dealer and jobber operated........   2,811      1,372       1,403
                                     -----      -----       -----

  Total retail stores.............   4,925      2,972       3,062
                                     =====      =====       =====

As of December 31, 1997,  Company-operated  retail stores in the Southwest  were
located primarily in Texas (1,226),  Colorado (229), Michigan (183),  California
(160) and  Oklahoma  (48).  The dealer and jobber  operated  stores are  located
primarily in Texas (821), Oklahoma (519), Michigan (240), Missouri (225), Kansas
(205) and California (204).

The Company has an ongoing program to modernize and upgrade the retail stores it
operates.  These efforts include the construction of new stores or improving the
uniformity and appearance of existing stores. Improvements generally include new
exterior  signage,  lighting  and  canopies,  as  well  as the  installation  of
computer-controlled  pumping  equipment.  During  the  three-year  period  ended
December 31, 1997, the Company  acquired or constructed 957 retail stores in the
Southwest. The majority of the retail stores constructed in 1997 were in Arizona
(18). In addition,  the Company  continually  reviews its retail store locations
and has closed or sold  marginally  profitable  stores.  During  the  three-year
period ended December 31, 1997, the Company closed or sold 163 stores.

The Company's  competitive  position is supported by its own proprietary  credit
card program, which had approximately 1.1 million active accounts as of December
31, 1997. The Company currently utilizes  electronic  point-of-sale  credit card
processing  (POS) at  substantially  all its Company and dealer operated stores.
POS  reduces  transaction  time at the sales  counter  and lowers the  Company's
credit  card  program  costs.  Over the past  several  years,  the  Company  has
installed  dispenser-mounted credit card readers at high volume Company operated
stores.

Southwest Petrochemicals and NGL's

In  addition  to its core  refining  and  marketing  businesses,  the Company is
engaged  in  several  related  operations,  the most  significant  of which  are
discussed below:

The  Company  owns and  operates  large  underground  natural  gas  liquids  and
petrochemical  storage and distribution  facilities  located at the Mont Belvieu
salt dome, near Houston,  Texas.  The facilities  have total  permitted  storage
capacity of 77.0 million  barrels and consist of 30 wells.  The  facilities  are
used for storing and distributing ethane, ethane/propane mix, ethylene, propane,
natural gasoline,  butane and isobutane,  as well as refinery-,  chemical-,  and
polymer-grade  propylenes.  The  facilities  receive  products  from  the  McKee
Refinery through the Skelly-Belvieu pipeline as well as from local fractionators
and through major pipelines coming from the mid-continent region, West Texas and
New Mexico.  The Company earns various storage and distribution  fees when NGL's
and  petrochemicals  are moved  through  and stored at the  facilities  and when
distributed  via  an  extensive  network  of  pipeline  connections  to  various
refineries and petrochemical complexes along the Texas and Louisiana Gulf Coast.

A major  component  of the Mont  Belvieu  facility is the two  propane/propylene
splitters  which are capable of producing  1.6 billion  pounds of  polymer-grade
propylene  per  year.  In 1997,  the  Company  started  construction  on a third
propane/propylene  splitter to  increase  the total  production  capacity to 3.0
billion pounds per year. The expansion cost of approximately  $55.0 million will
be shared with the  Company's  partner and the third  splitter is expected to be
completed in August  1998.  Polymer-grade  propylene is a feedstock  used in the
manufacture of plastics. The splitters utilize refinery-grade propylene produced
at the McKee and Three Rivers Refineries and other refineries for feedstock. The
polymer-grade propylene is distributed to purchasers in the Houston Ship Channel
area via a pipeline from Mont Belvieu to an export terminal.

Portions of the Mont Belvieu facilities are only partially-owned by the Company.
The Company operates the  SkellyBelvieu  pipeline;  however,  it only owns a 50%
interest in the pipeline. American PetroFina, Inc. (Fina) owns a 33% interest in
the two propane/propylene  splitters located at the hydrocarbon storage facility
and the  third  splitter  under  construction.  The  Company  and Fina pay their
proportionate  share of  costs  and  receive  their  proportionate  share of the
products produced.  A petrochemical  export terminal located in the Houston Ship
Channel  is  operated  by the  Company;  however,  the  Company  only owns a 50%
interest in the terminal.

In November  1997, the Company  signed a memorandum of  understanding  with Koch
Hydrocarbon Co., a division of Koch  Industries,  Inc. and Koch Pipeline Co., an
affiliate of Koch  Industries,  Inc. for a 50-50 joint  venture  related to each
entity's Mont Belvieu assets.  The venture requires that the Company  contribute
its  majority  interest in the  propylene  splitters  and  related  distribution
pipeline  and  terminal,  its  operating  interest  in the  hydrocarbon  storage
facility  and certain of its  pipeline  and supply  systems,  and that Koch will
contribute its majority  interest in its Mont Belvieu  natural gas  fractionator
facility and certain of its pipeline and supply systems. In the first quarter of
1998,  the Company  expects to finalize  the joint  venture and other  operating
agreements and to contribute the  agreed-upon  assets to the joint venture for a
50% ownership interest therein.

Northeast Refining

The Quebec  Refinery  has a  throughput  capacity  of 160,000  bpd and relies on
foreign crude oil for feedstock. During the three years ended December 31, 1997,
the Company completed several capital projects at the Quebec Refinery, including
expanding   the  fluid   catalytic   cracking  unit  and   debottlenecking   and
reconfiguring  crude  cracking  units,  all of which have  resulted  in expanded
throughput.

Northeast Supply and Distribution

The Quebec Refinery receives crude oil by ship at its deep-water dock on the St.
Lawrence  River.  The  location of the  refinery  and dock allow the refinery to
receive  year-around  shipments of crude oil from large crude oil  tankers.  The
Quebec Refinery has storage  capacity for more than 8.0 million barrels of crude
oil,  intermediate  and  refined  products  as well as  pressurized  storage for
liquefied  petroleum gas. The Company's ability to receive large,  single cargos
up to 1.0 million barrels offers a significant  advantage over other  refineries
in the region, which must rely on pipelines and small cargos. Additionally,  the
Company  has  time   charters  on  three  large  crude  oil  tankers  which  are
double-bottomed and double-hulled and are capable of navigating the St. Lawrence
River in the winter.

The  Company  has  short-term  supply  contracts  with major  international  oil
companies to supply the Quebec  Refinery  with light,  sweet crude oils from the
North Sea and North Africa, principally at spot market prices. While the Company
has no crude oil reserves, it believes that given the wide availability of North
Sea and North  Africa crude oils in the  international  market,  its  operations
would not be materially adversely affected if its existing supply contracts were
canceled.

Refined product is transported  from the Quebec Refinery by coastal ship,  truck
and  railroad  tank  car.  The  Company  operates  a  distribution   network  of
approximately 71 bulk storage facilities throughout the Northeast,  including 23
terminals. Reciprocal product exchange agreements with other refineries are used
to minimize  transportation  costs,  optimize  refinery  utilization and balance
product availability in particular locations with marketing demand.

Northeast Marketing

The Company is a major supplier of refined petroleum products in eastern Canada,
serving Quebec, Ontario and the Atlantic Provinces of Newfoundland, Nova Scotia,
New Brunswick and Prince Edward Island.  In 1997,  the Company's  total sales of
refined products (retail and wholesale) in its Northeast market averaged 215,000
bpd. The gasoline and diesel fuel is sold under the Ultramar(R)  brand through a
network of approximately  1,274 stores located  throughout eastern Canada. As of
December 31, 1997, the Company owned or controlled,  under long-term leases, 629
stores and it  distributed  gasoline  to 645  branded  dealers  and  independent
jobbers on an unbranded basis. In addition, the Company has 84 cardlocks,  which
are  card- or key-  activated,  self-service,  unattended  stations  that  allow
commercial, trucking and governmental fleets to buy gasoline and diesel fuels 24
hours a day.

Over the past several years,  the Company has converted 193 stores of its retail
network from lessee- and agent-operated  stores to  Company-operated  stores and
plans to add approximately  200 convenience  stores to its network over the next
three years.

The Northeast  operations include one of the largest home heating oil businesses
in North America.  In 1997, the Company sold, under the Ultramar(R)  brand, home
heating  oil to  approximately  236,000  households  in  eastern  Canada and the
northeastern  United  States.  Under a development  plan  initiated in 1995, the
Company  has   acquired  six  retail  home   heating  oil   operations,   adding
approximately 80,000 households.

In  January  1998,  the  Company  signed  a  memorandum  of  understanding  with
Petro-Canada  to form a joint  venture  related to each  entity's  refining  and
marketing  assets located in Canada and the northern United States.  The venture
requires that the Company  contribute all of the assets in its Northeast segment
as well as assets located in Michigan.  Petro-Canada  will contribute all of its
refining and marketing assets in Canada, including three refineries, a lubricant
oil manufacturing  facility and approximately  1,800 retail outlets.  Control of
the venture  will be shared,  with major  decisions  requiring  approval of both
parties.  Petro-Canada  will own 51% and the Company 49% of the voting  units of
the joint venture.  Profits and losses will be divided between  Petro-Canada and
the  Company  in a ratio of 64% to 36%,  respectively.  The  Company  expects to
complete the joint venture in the summer of 1998.

                           Competitive Considerations

The  refining  and  marketing  business  continues  to  be  highly  competitive.
Competitors include a number of well capitalized and fully-integrated  major oil
companies and other independent refining and marketing concerns which operate in
all of the Company's  market areas.  The recent  consolidation  and  convergence
experienced  in the  refining and  marketing  industry has reduced the number of
competitors; however, it has not reduced overall competition. The Company itself
is  the  result  of a  Merger,  and in  1997,  the  Company  acquired  Total,  a
mid-continent refiner and marketer.

The Company's refineries and supply and distribution  networks are strategically
located in  markets  it serves.  The  Company  consistently  sells more  refined
product than its refineries produce,  purchasing its additional  requirements in
the spot market.  This strategy has enabled the Company's  refineries to operate
at high throughput rates, while efficiently expanding capacity as deemed prudent
and necessary.  Quality products and strong brand identification have positioned
the Company as the largest  marketer of motor fuels in Texas,  Colorado  and New
Mexico, with market shares of approximately 16%, 19% and 12%, respectively,  and
the second largest  independent  marketer in California,  with a market share of
approximately  7%. In Quebec,  Canada,  the Company is the  largest  independent
marketer of motor fuels with a market  share of  approximately  24%,  and in the
adjacent  Canadian  Atlantic  provinces,  the  Company  has a  market  share  of
approximately  18%. In addition to motor fuel sales,  the Company's  merchandise
sales at Company-owned  stores have steadily increased over the the passed three
years and  reached  an average of  $3,028,000  per day in the fourth  quarter of
1997.

Financial  returns in the  refining and  marketing  industry  depend  largely on
refining  margins and retail  marketing  margins,  both of which have fluctuated
significantly in recent years. Refining margins are frequently impacted by sharp
changes in crude oil costs which are not immediately reflected in retail product
prices. Crude oil and refined products are commodities, thus their prices depend
on numerous  factors  beyond the  Company's  control,  including  the supply and
demand for crude oil and gasoline.  A large,  rapid increase in crude oil prices
would adversely  affect the Company's  operating  margins if the increased costs
could not be passed on to customers. The industry also tends to be seasonal with
increased  demand for  gasoline  during the summer  vacation  season and, in the
northeast regions, for home heating oil during the winter months.

                               Regulatory Matters
Environmental

The Company's refining and marketing operations are subject to a variety of laws
and  regulations  in the United  States and Canada  governing  the  discharge of
contaminants  into,  or  otherwise  relating  to, the  environment.  The Company
believes that its operations are in substantial  compliance  with all applicable
environmental laws.

The principal  environmental risks associated with the Company's  operations are
emissions  into the air and releases into soil or  groundwater.  The  unintended
release of emissions,  at refineries,  terminals and convenience stores and from
ships,  trains,  pipelines and trucks,  may occur despite stringent  operational
controls  and the best  management  practices.  Such  releases  may give rise to
liability  under  environmental  laws and  regulations  in the United States and
Canada relating to contamination of air, soil, groundwater,  and surface waters.
The Company employs personnel specifically trained to prevent occurrences and to
address and remediate these problems in the event they arise.  In addition,  the
Company has adopted policies, practices and procedures in the areas of pollution
control,  product safety and  occupational  health;  the  production,  handling,
storage, use and transportation of refined petroleum products;  and the storage,
use  and  disposal  of  hazardous   materials,   designed  to  prevent  material
environmental  or other  damage and limit the  financial  liability  which could
result from such events.

The total cost for environmental assessment and remediation depends on a variety
of  regulatory  standards,  some of which  cannot be  anticipated.  The  Company
establishes  environmental  accruals  when site  restoration  and  environmental
remediation and cleanup  obligations are either known or considered probable and
can be reasonably  estimated.  Accruals for  environmental  matters  amounted to
approximately  $213.9 million as of December 31, 1997,  including  $79.7 million
related to Total acquired in September 1997.

The Company believes that its environmental  risks will not,  individually or in
the  aggregate,  have a material  adverse effect on its financial or competitive
position.  See "Legal  Proceedings --  Environmental"  for a discussion of legal
proceedings involving the Company relative to environmental matters.

                                    Employees

As of December  31, 1997,  the Company and its  subsidiaries  had  approximately
23,000 employees, including salaried and hourly employees,  approximately 20,000
of whom were employed in the United States and approximately  3,000 of whom were
employed in Canada.  Approximately 4 % of the Company's employees are affiliated
with a union under contract or covered by collective bargaining agreements.  The
Company believes that it maintains good relations with all its employees.

                      Executive Officers of the Registrant

The following is a list of the Company's  executive  officers as of February 28,
1998:


     Name                 Age                                   Position

Roger R. Hemminghaus      61     Chairman of the Board and Chief Executive 
                                   Officer

Jean R. Gaulin            55     Vice Chairman of the Board, President and Chief
                                   Operating Officer

Timothy J. Fretthold      48     Executive Vice President, Chief Administrative 
                                   and Legal Officer

William R. Klesse         51     Executive Vice President, Refining, Product 
                                   Supply and Logistics

H. Pete Smith             56     Executive Vice President and Chief Financial 
                                   Officer

Robert S. Beadle          48     Senior Vice President, Corporate Development

W. Paul Eisman            42     Senior Vice President, Refining

Alain Ferland             44     Senior Vice President, Development

Christopher Havens        43     Senior Vice President, Retail Marketing and 
                                   Operations


All  executive  officers were  appointed to the  positions  above on December 3,
1996,  following  stockholder  approval of the  Ultramar  and  Diamond  Shamrock
Merger, except as described below.

Roger R. Hemminghaus is Chairman of the Board and Chief Executive Officer of the
Company, and has served in those capacities since the Merger. Previously, he was
Chairman  of the  Board,  President  and  Chief  Executive  Officer  of  Diamond
Shamrock.

Jean R. Gaulin is Vice  Chairman  of the Board,  President  and Chief  Operating
Officer of the  Company,  and has served in those  capacities  since the Merger.
Previously,  he was  Chairman  of the  Board  and  Chief  Executive  Officer  of
Ultramar.

Timothy J.  Fretthold  is  Executive  Vice  President  and Chief  Administrative
Officer of the Company, and has served in those capacities since the Merger, and
was appointed Chief Legal Officer in August 1997. Previously, he was Senior Vice
President / Group Executive and General Counsel of Diamond Shamrock.

William R. Klesse is Executive  Vice  President,  Refining,  Product  Supply and
Logistics  of the  Company,  and has served in that  capacity  since the Merger.
Previously, he was Executive Vice President and prior thereto he was Senior Vice
President of Diamond Shamrock.

H. Pete Smith is Executive  Vice  President and Chief  Financial  Officer of the
Company, and has served in those capacities since the Merger. From April 1996 to
the  Merger,  he was  Senior  Vice  President  and Chief  Financial  Officer  of
Ultramar. Prior to April 1996, he was Vice President and Chief Financial Officer
of Ultramar.

Robert S. Beadle is Senior Vice President,  Corporate Development of the Company
effective  January  1998,  and  previously  was Senior  Vice  President,  Retail
Marketing,  Southwest,  since  the  Merger.  Prior  to the  Merger,  he was Vice
President,  Retail Marketing and Vice President  Wholesale  Marketing of Diamond
Shamrock.

W. Paul Eisman is Senior Vice President, Refining of the Company, and has served
in that capacity since the Merger. Previously, he was Vice President,  Refining,
and  Group  Executive  of  Diamond  Shamrock.  Prior  to his  promotion  to Vice
President, he served in various senior positions within Diamond Shamrock.

Alain Ferland is Senior Vice  President,  Development  of the Company  effective
January 1998, and previously was Senior Vice President, Refining, Product Supply
and Logistics,  Northeast since the Merger. From June 1996 to the Merger, he was
President of Ultramar  Canada,  Inc. and prior  thereto,  he served as Executive
Vice President and Senior Vice President of Ultramar Canada, Inc.

Christopher Havens is Senior Vice President, Retail Marketing and Operations, of
the Company  effective  January 1998, and previously was Senior Vice  President,
Marketing,  Northeast  and  Wholesale  since the Merger.  From March 1996 to the
Merger, he was President of Ultramar Energy,  Inc. and prior thereto,  he served
as  Senior  Vice  President  Marketing  and in a  variety  of  senior  marketing
positions within Ultramar.

ITEM 2. PROPERTIES

The Company owns the McKee, Three Rivers, Quebec, Wilmington,  Ardmore, Alma and
Denver  refineries  and  related  facilities  in  fee.  The  Company  also  owns
approximately  1,223  miles of crude oil  pipelines  and 3,357  miles of refined
product  pipelines as of December 31, 1997. The Company jointly owns with one or
more other companies, 41 miles of crude oil pipelines and 1,246 miles of refined
product pipelines,  and the Company's interest in such pipelines is 30% and 54%,
respectively.  As of  December  31,  1997,  the  Company  owned 71 bulk  storage
facilities in the Northeast  and 14 product  terminals in the Southwest  (one of
which is only 60% owned by the Company).  The Company leases,  under a long-term
operating  lease, the property on which its Corpus Christi crude oil terminal is
situated.

The  principal  properties  used in the  Company's  marketing  operations  as of
December 31, 1997 were 2,743 Companyoperated  retail stores, 1,317 of which were
owned in fee and 1,426 of which were leased under long-term operating leases. Of
the leased retail  stores,  193 were leased to the Company  pursuant to a $190.0
million lease facility  expiring in December 2003 (the Brazos Lease). At the end
of the lease term, the Company may purchase the properties or renew the lease or
arrange for a sale of the retail  stores.  In 1996,  the Company  entered into a
similar  $100.0  million  lease  facility  expiring in July 2003 (the  Jamestown
Lease).  As of December 31, 1997,  six sites and the new corporate  headquarters
building were leased under this facility.  As a result of the  Acquisition,  the
Company  assumed a $65.0 million lease  facility with similar terms to the above
lease facilities  expiring in August 2002 (the Total Lease).  As of December 31,
1997, 36 retail stores were leased under this facility. For a description of the
Company-operated  retail  stores,  see  "Southwest  Marketing"  and "  Northeast
Marketing" in Item 1. Business above.

The principal  plants and properties  used in the Company's  Petrochemicals  and
NGL's segment are the hydrocarbon  storage  facility at Mont Belvieu,  which the
Company owns,  and the  jointly-owned  propane  splitters at Mont  Belvieu.  See
"Southwest Petrochemical and NGL's" in Item 1. Business above.

ITEM 3. LEGAL PROCEEDINGS

The Company is engaged in a number of hydrocarbon  remediation  projects.  While
cleanup projects are typically conducted under the supervision of a governmental
authority,  they do not involve  proceedings  seeking material  monetary damages
from the Company and are not expected to be material to the Company's operations
or financial position.

State of Iowa  Storage  Tank Fund Board  Claim.  The State of Iowa has taken the
position that Total  Petroleum,  Inc. (TPI) is liable for certain costs incurred
by the state in connection  with the assessment  and  remediation of hydrocarbon
contamination at sites which formerly sold gasoline under TPI's brand. The state
has  identified  66  "known"  sites,  and has  identified  another  52  sites as
"anticipated"  sites,  meaning that the state anticipates making claims relating
to those sites in the future.  Most of the 66 sites  identified as "known" sites
are former branded distributor sites. The state has offered to settle its claims
with respect to all sites for $2,300,000.

Denver Refinery. The United States Environmental Protection Agency (EPA) and the
Colorado  Department of Health and Environment (CDHE) have entered into a letter
of intent with Colorado Refining Company (CRC), a wholly-owned subsidiary of the
Company,  relating  to  CRC's  alleged  liability  arising  from an  underground
hydrocarbon plume on property adjoining CRC's Denver Refinery.  Under the letter
of intent,  which is to be  incorporated  into an agreed consent order within 90
days, CRC is to pay a penalty of $72,500,  and fund "supplemental  environmental
projects"  costing at least $290,000.  Supplemental  environmental  projects are
environmentally  desirable  projects  which are not  required by existing law or
regulation.

In the  Matter of TPI  (Combined  Notice of  Violation  No.  EPA-5-97-MI-33  and
Finding of Violation  No.  EPA-5-97-MI-  34 filed  August 5, 1997).  In January,
1998,  the EPA and the U.S.  Department  of Justice  (DOJ)  notified  TPI of its
intention to seek a multimedia  enforcement action alleging additional potential
violations  under  the  Federal  Clean  Water  Act,  Clean  Air  Act,   Resource
Conservation and Recovery Act, and Underground  Wastewater Injection regulations
as well as violations of Michigan law and regulations.  To date, the EPA and the
DOJ have  proposed a settlement of certain  Clean Air Act  violations  for fines
exceeding $3,500,000.

Michigan Department of Environmental  Claims. The Surface Water Quality Division
of the Michigan Department of Environmental  Claims ("MDEC") has notified TPI of
its  intention  to seek  fines and  penalties  in  connection  with a seepage of
hydrocarbons  into the Chippewa  River from the  Roosevelt  Refinery site in Mt.
Pleasant,  Michigan. TPI has agreed to pay $250,000 to MDEC in settlement of all
past surface water violations in connection with the discharge.

Purity Oil  Superfund  Site.  The Company  has  settled  this matter with a cash
payment of $250,000.

The  Company is involved in various  claims and  lawsuits  arising in the normal
course of business. In the opinion of the Company's  management,  based upon the
advice of  counsel,  the  ultimate  resolution  of these  matters  and the above
described  environmental  actions will not have a material adverse effect on the
Company's operations or financial position.

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

None.

                                     PART II

ITEM 5. MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED
        STOCKHOLDER MATTERS

The  Company's  Common  Stock  is  listed  on the New York  and  Montreal  stock
exchanges under the symbols "UDS" and "ULR," respectively.  The table below sets
forth, for the periods indicated,  the high and low sales prices on the New York
Stock Exchange of the Company's Common Stock, and dividends per share thereon.


                                        Price Range of                  Cash
                                         Common Stock                 Dividends
                                        High             Low          Declared
Year 1997
1st Quarter                            $33  1/4        $28              $0.275
2nd Quarter                             33  5/8         30 1/8           0.275
3rd Quarter                             34  3/4         31 1/2           0.275
4th Quarter                             34 3/16         27 5/8           0.275

Year 1996
1st Quarter                             29  1/2         26 1/8           0.275
2nd Quarter                             32  7/8         28 3/4           0.275
3rd Quarter                             30  1/2         25 7/8           0.275
4th Quarter                             32  3/4         27 3/4           0.275

In each quarter of 1997,  the Company  declared and paid dividends of $0.625 per
share on its 5% Cumulative Convertible Preferred Stock. During 1997, the Company
also declared and paid  dividends  totaling $1.07 per share on the 8.32% Company
obligated preferred stock of a subsidiary.

The Company expects to continue its policy of paying regular cash dividends. The
timing,  amount and form of future dividends will be determined by the Company's
Board of Directors and will depend upon,  among other things,  future  earnings,
capital requirements,  financial condition and the availability of dividends and
other payments from subsidiaries  which are subject to the limitation  described
in  Note  10  to  the  consolidated   financial   statements  and  discussed  in
"Management's  Discussion  and  Analysis of Financial  Condition  and Results of
Operations." As of December 31, 1997, under the most restrictive debt covenants,
$169.6 million is available for the payment of dividends.

As  of  February  27,  1998,  there  were  86,810,282  shares  of  Common  Stock
outstanding which were held by 12,549 holders of record.

The 5% Cumulative  Convertible  Preferred Stock is convertible into Common Stock
when the market price of the Common Stock exceeds $33.77 per share for 20 of any
30  consecutive  trading days. As of February 27, 1998,  the market price of the
Company's Common Stock exceeded the required  threshold  allowing the Company to
convert all of the Preferred Shares into 3,318,707 Common Shares. The conversion
is expected to occur in the first quarter of 1998.

ITEM 6. SELECTED FINANCIAL DATA

The consolidated selected financial data for the five-year period ended December
31, 1997, has been derived from the audited consolidated financial statements of
the Company. The consolidated  selected financial data for the four- year period
ended  December 31, 1996,  has been restated to include the balances and results
of Diamond  Shamrock due to the Merger,  which was accounted for as a pooling of
interests, on December 3, 1996.

The consolidated  selected  financial data as of December 31, 1997 and 1996, and
for each of the three years in the period ended  December  31,  1997,  should be
read in  conjunction  with the audited  consolidated  financial  statements  and
related  notes  thereto  included   elsewhere  herein,  and  with  "Management's
Discussion and Analysis of Financial Condition and Results of Operations."
<TABLE>
<CAPTION>

                                                                            Years Ended December 31,
                                                  1997 (2)     1996         1995 (3)    1994         1993 (5)
                                                  ----         ----         ----        ----         ----
                                                                (in millions, except per share data)
<S>                                               <C>          <C>          <C>         <C>         <C>
Statement of Operations Data:
  Sales and other revenues .......................$10,882.4    $10,208.4    $8,083.5    $7,418.3    $7,056.3
  Operating income ...............................    384.4         69.9       226.8       299.2       279.2
  Income (loss) before extraordinary loss
    and cumulative effect ........................    159.6        (35.9)       95.0       136.8       119.1
  Extraordinary loss on debt extinguishment(1) ...     (4.8)          --          --          --          --
 
  Cumulative effect of accounting change(4) ......       --           --        22.0          --       (14.2)
  Net income (loss) ..............................    154.8        (35.9)      117.0       136.8       104.9

Basic income (loss) per share:
  Income (loss) before extraordinary loss and
    cumulative effect ............................      1.99        (0.54)       1.31        1.95        1.73
  Extraordinary loss on debt extinguishment(1) ...     (0.06)         --          --          --          --
Cumulative effect of accounting change(4) ........       --           --         0.31         --        (0.21)
  Net income (loss) ..............................      1.93        (0.54)       1.62        1.95        1.52

Diluted income (loss) per share:
  Income (loss) before extraordinary loss and
    cumulative effect ............................      1.94        (0.54)       1.30        1.90        1.67
  Extraordinary loss on debt extinguishment(1) ...     (0.06)         --          --          --          --
  Cumulative effect of accounting change(4) ......       --           --         0.30         --        (0.20)
  Net income (loss) ..............................      1.88        (0.54)       1.60        1.90        1.47

Cash dividends per share:
  Common .........................................      1.10         1.10        1.10        1.10        1.10
  Preferred ......................................      2.50         2.50        2.50        2.50        1.28
  Preferred of subsidiary ........................      1.07          --          --          --          --

Weighted average number of shares (in thousands):
  Basic ..........................................    78,120       74,427      69,467      68,064      67,605
  Diluted ........................................    82,424       74,427      73,333      71,994      71,497


                                                                               As of December 31,

                                                  1997 (2)     1996         1995 (3)    1994         1993 (5)
                                                  ----         ----         ----        ----         ----
                                                                            (in millions)

Balance Sheet Data:
  Cash and cash equivalents ......................$    92.0    $   197.9    $  175.5    $   82.5     $ 110.2
  Working capital ................................    360.1        303.1       385.7       361.3       395.3
  Total assets ...................................  5,594.7      4,420.0     4,216.7     3,384.4     3,073.9
  Long-term debt, less current portion ...........  1,866.4      1,646.3     1,557.8     1,042.5       980.5
  Preferred stock of subsidiary ..................    200.0           --          --          --          --
  Stockholders' equity ...........................  1,686.6      1,240.9     1,328.0     1,122.3     1,069.3

</TABLE>

(1) In November  1997,  the Company  terminated  its ESOPs in  conjunction  with
restructuring the employee benefit plans pursuant to the Merger,  and recognized
an  extraordinary  loss of $4.8  million  (net of  income  tax  benefit  of $3.2
million),  or $0.06 per share on a diluted  basis,  as a result of prepaying the
underlying 8.77% Senior Notes related thereto.

(2) On  September  25,  1997,  the Company  acquired  Total for $851.8  million,
consisting  of $460.5  million of debt  assumed  and  $391.3  million of Company
common stock issued for the  outstanding  stock of Total.  The  acquisition  was
accounted  for using the  purchase  method  and,  accordingly,  the  results  of
operations of Total are included from the date of acquisition.

(3) On December 14, 1995, Diamond Shamrock acquired NCS for approximately $280.0
million.  The  acquisition  was  accounted  for using the  purchase  method and,
accordingly,  the results of  operations  of NCS are  included  from the date of
acquisition.

(4)  During  the  second  quarter of 1995,  the  Company  changed  its method of
accounting for refinery maintenance turnaround costs from an accrual method to a
deferral method. The change resulted in a cumulative adjustment through December
31, 1994, of $22.0 million (net of income taxes of $13.4 million),  or $0.30 per
share on a diluted  basis,  which is  included  in net income for the year ended
December 31, 1995. The effect of the change on the year ended December 31, 1995,
was to  increase  income  before  cumulative  effect  of  accounting  change  by
approximately  $3.5 million  ($0.05 per share on a diluted basis) and net income
by $25.5  million  ($0.35  per  share on a  diluted  basis).  Had the  change in
accounting policy been in effect since the beginning of 1993, net income for the
years ended  December 31, 1994 and 1993,  would have been $143.4  million ($1.99
per share on a diluted  basis) and $115.0  million ($1.61 per share on a diluted
basis), respectively.

(5) In 1993,  Diamond  Shamrock  changed  its method of  accounting  for certain
liabilities  resulting from an agreement with Diamond  Shamrock's former parent.
The change  resulted in a cumulative  adjustment  through  December 31, 1992, of
$14.2 million (net of income tax benefit of $9.4 million), or $0.20 per share on
a diluted  basis,  which is reflected in net income for the year ended  December
31, 1993.

ITEM 7.   MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
          AND RESULTS OF OPERATIONS

The Company

The  Company's  operating  results  are  affected by  Company-specific  factors,
primarily its refinery utilization rates and refinery  maintenance  turnarounds;
seasonal factors,  such as the demand for petroleum products and working capital
requirements in the Northeast, both of which vary significantly during the year;
and  industry  factors,  such as movements in and the level of crude oil prices,
the demand for and prices of refined products and industry supply capacity.  The
effect  of crude  oil  price  changes  on the  Company's  operating  results  is
determined,  in part,  by the rate at which  refined  product  prices  adjust to
reflect such changes.  As a result, the Company's earnings have been volatile in
the past and may be volatile in the future.

Seasonality

In the Northeast,  demand for petroleum products varies significantly during the
year.  Distillate demand during the first and fourth quarters can range from 30%
to 40% above the  average  demand  during  the second  and third  quarters.  The
substantial  increase in demand for heating oil during the winter months results
in the Company's  Northeast  operations  having  significantly  higher  accounts
receivable  and inventory  levels  during the first and fourth  quarters of each
year. Additionally, the Company is impacted by the increased demand for gasoline
during the summer vacation season. The Company's  Southwest  operations are less
affected  by  seasonal  fluctuations  in  demand  than  its  operations  in  the
Northeast.

Year Ended December 31, 1997, Compared to Year Ended December 31, 1996

Financial and operating data by geographic area for the years ended December 31,
1997 and 1996, are as follows:

Financial Data:
- ---------------
<TABLE>
<CAPTION>
                                                                    Years Ended December 31,
                                                           1997                             1996
                                                         --------                         --------
                                         Southwest(1)   Northeast    Total      Southwest   Northeast   Total
                                         ---------      ---------    -----      ---------   ---------   -----
                                                                         (in millions)
<S>                                      <C>            <C>          <C>        <C>         <C>         <C>
Sales and other revenues .............   $7,866.8       $3,015.6     $10,882.4  $7,161.6    $3,046.8    $10,208.4
Cost of products sold(3) .............    5,031.8        1,785.7       6,817.5   4,728.9     1,821.1      6,550.0
Operating expenses ...................      762.8          124.4         887.2     802.4       125.7        928.1
Selling, general and
   administrative expenses ...........      149.9          167.4         317.3     128.8       173.2        302.0
Taxes other than income taxes ........    1,489.7          786.2       2,275.9   1,278.4       822.7      2,101.1
Depreciation and amortization ........      167.7           32.4         200.1     153.5        26.4        179.9
Merger and integration costs(5) ......         --             --            --        --          --         77.4
                                         --------       --------     ---------  --------    --------    ---------
Operating income .....................   $  264.9       $  119.5         384.4  $   69.6    $   77.7         69.9
Gain on sale of office building(2) ...   ========       ========          11.0  ========    ========           --
Interest income ......................                                    11.5                               18.4
Interest expense .....................                                  (131.7)                            (128.5)
                                                                     ---------                          ---------
Income (loss) before income taxes,
extraordinary loss and dividends of
subsidiary............................                                   275.2                              (40.2)
Provision (benefit) for income taxes                                     110.2                               (4.3)
Extraordinary loss(4).................                                     4.8                                 -
Dividends on subsidiary stock.........                                     5.4                                 -
                                                                     ---------                          ---------
Net income (loss).....................                               $   154.8                          $   (35.9)
                                                                     =========                          =========
</TABLE>

(1) On  September  25,  1997,  the Company  acquired  Total for $851.8  million,
consisting  of $460.5  million of debt  assumed  and  $391.3  million of Company
Common Stock issued for the  outstanding  stock of Total.  The  acquisition  was
accounted  for using the  purchase  method  and,  accordingly,  the  results  of
operations of Total are included from the date of acquisition.

(2) In March 1997,  the Company  recognized an $11.0 million gain on the sale of
an office building in San Antonio, Texas which was originally purchased to serve
as the Company's corporate headquarters.

(3) In December 1997, the Company recorded an $11.1 million  non-cash  reduction
in the carrying value of crude oil inventories  due to the  significant  drop in
crude oil prices late in 1997.

(4) In November  1997,  the Company  terminated  its ESOPs in  conjunction  with
restructuring the employee benefit plans pursuant to the Merger,  and recognized
an  extraordinary  loss of $4.8  million  (net of  income  tax  benefit  of $3.2
million),  as a result of prepaying  the  underlying  8.77% Senior Notes related
thereto.

(5) In connection with the Merger,  the Company  recorded merger and integration
costs of $77.4  million  ($53.0  million net of income tax  benefit)  during the
fourth  quarter of 1996.  Such costs  consisted of $13.1  million of  financial,
legal and registration  fees and $64.3 million related to workforce  reductions,
writedowns of facilities and equipment, and other costs.

Operating Data:
                                                       Years Ended
                                                       December 31,
                                                  1997             1996
                                                  ----             ----
Southwest

  Mid-Continent Refineries (1):
    Throughput (bpd)........................      272,300          235,500
    Margin (dollars per barrel).............         4.89             3.61

  Wilmington Refinery:
    Throughput (bpd)........................      120,300          102,700
    Margin (dollars per barrel).............         4.61             4.66

  Retail Marketing:
    Fuel volume (bpd).......................      127,200          107,400
    Fuel margin (cents per gallon)..........         11.9             12.7
    Merchandise sales ($1,000/day)..........        2,551            2,416
    Merchandise margin (%)..................         30.2             30.6

Northeast

  Quebec Refinery:
    Throughput (bpd)........................      139,800          143,900
    Margin (dollars per barrel).............         2.35             3.15

  Retail Marketing:
    Fuel volume (bpd).......................       64,000           60,900
    Overall margin (cents per gallon) (2)...         26.8             22.2

(1)  Effective  September  25,  1997,  the  Mid-Continent  Refineries,  formerly
referred to as McKee and Three Rivers Refineries,  include the Alma, Ardmore and
Denver  Refineries  acquired from Total.  Excluding the  operations of the Total
Refineries for the fourth quarter of 1997, the 1997  throughput  would have been
231,000 bpd and the margin would have been $5.39 per barrel.

(2) Retail  marketing  overall  margin  reported for the Northeast  represents a
blend of gross margin from Company and dealer  operated  retail stores,  heating
oil sales and the cardlock business segment.
     a)

Summary

Net income for the year ended  December  31,  1997,  totaled  $154.8  million as
compared to a net loss in 1996 of ($35.9) million. In the Southwest, the Company
had operating income of $264.9 million in 1997, as compared to $69.6 million for
1996. The increase in operating  profit was primarily due to increased  refining
margins at the Mid-Continent Refineries,  increased throughput at the Wilmington
Refinery,  increased retail fuel volumes,  and decreased  operating expenses due
primarily to efficiencies gained from the Merger.  These increases were somewhat
offset by a decrease in the average retail  marketing fuel margin and a decrease
in the retail marketing  merchandise margin. In the Northeast,  operating income
was $119.5  million for 1997 as compared to $77.7  million for 1996, as a result
of improved  retail  marketing  fuel  volumes  and a 21%  increase in the retail
marketing  margin.  These  increases were  partially  offset by a decline in the
Quebec Refinery throughput and a 25% decline in the refining margin.

Southwest Operations

Sales and other  revenues in the Southwest for the year ended  December 31, 1997
totaled  $7.9 billion and were 9.8% higher than 1996  primarily  due to an 18.4%
increase in retail  marketing  fuel volumes and the  additional  sales of $755.6
million from Total, acquired in September 1997.

The refining  margin for the  Mid-Continent  Refineries  of $4.89 per barrel for
1997  increased  by 35.5% as compared  to $3.61 per barrel for 1996,  reflecting
declining  crude oil costs and  increased  demand  during 1997. As a result of a
partial  shutdown  of  the  McKee  Refinery  in  the  fourth  quarter  of  1997,
throughput,  excluding the Total Refineries, declined by 1.9% from 1996 to 1997;
however,  this shutdown of McKee allowed the Total Refineries to operate at much
higher  levels to supply the needed  demand.  During the  shutdown  at the McKee
Refinery,  the  Company  performed  additional  maintenance  in order to defer a
scheduled 1998  turnaround  until 1999.  The refining  margin for the Wilmington
Refinery  remained  steady at $4.61 per barrel in 1997 as  compared  to $4.66 in
1996.  Throughput at the Wilmington Refinery during 1997 increased by 17.1% over
the same period in 1996 to 120,300 bpd,  principally  due to the  processing  of
additional  feedstocks through the refinery's gas oil hydrotreater which came on
stream in the second quarter of 1996.

Retail marketing fuel volume increased by 18.4% to 127,200 bpd, principally as a
result of the addition of 27 new  convenience  stores  during 1997 and increased
volumes sold through  Total  branded  convenience  stores  acquired in September
1997.  Retail fuel margins  decreased by 6.3% to 11.9 cents per gallon for 1997,
due primarily to a very competitive  pricing environment at the station level in
the Texas market,  partially  offset by increased fuel margins in California and
Colorado in 1997.

Merchandise  sales at the Company's  convenience  stores  increased 5.6% to $2.6
million per day during 1997 from $2.4 million per day in 1996.  This increase is
a direct  result of the  Company's  plan to expand  and  upgrade  its  marketing
operations, which included the construction of 27 new stores and the acquisition
of 560  Total  convenience  stores.  On a per  store  basis,  merchandise  sales
increased  4.3%  due  to  the  Company  closing  or  selling   approximately  84
underperforming  convenience  stores.  The retail marketing  merchandise  margin
remained  steady at 30.2% in 1997 as compared to 30.6% in 1996,  as  competitive
pressures on the pricing of beer, soda and tobacco products continued.

The  petrochemicals  and NGL's  businesses  contributed  $23.3  million  to 1997
operating  income versus $9.5 million in 1996 as a result of increased  sales of
polymer-grade  propylene  from  the  second  splitter  completed  in  1996,  and
continued strong demand for Nitromite fertilizer. In the fourth quarter of 1997,
the Company started an expansion project for the existing two  propane/propylene
splitters,  and will complete  construction  of a third splitter in 1998 to take
advantage of the  increasing  demand for  polymer-grade  propylene,  used in the
manufacture of plastics.

Operating expenses declined $39.6 million or 4.9%, to $762.8 million as a result
of merger  synergies  experienced in both refining and marketing.  Excluding the
operating  expenses related to Total of $66.5 million,  the decline in operating
expenses would have been $106.1 million or 13.2 %.

Selling,  general and  administrative  expenses for 1997 of $149.9  million were
$21.1  million  higher  than in 1996,  and  included  $19.0  million of selling,
general and administrative expenses incurred by Total for the three months ended
December 31, 1997. Overall, selling, general and administrative expense remained
level  with 1996  reflecting  higher  selling  costs  incurred  to  support  the
increased sales which were offset by lower general and  administrative  expenses
associated with synergies resulting from the Merger.

Northeast Operations

Sales and other  revenues in the Northeast in 1997 totaled $3.0 billion and were
$31.2  million,  or 1.0%,  lower than 1996, as a result of lower  throughput and
lower product prices during the year.

Refining  margins  decreased by 25.4% to $2.35 per barrel in 1997 as compared to
$3.15 per barrel in 1996,  due to lower average  Atlantic  Basin crack  spreads.
Throughput  at the Quebec  Refinery  averaged  139,800 bpd or 2.8% lower than in
1996 as throughput was adversely affected by a scheduled major turnaround in the
second  quarter of 1997.  During the  recent  ice storms in the  Northeast,  the
Quebec  Refinery,  which is located  north of the  affected  area,  continued to
operate,  while  competitors'  refineries  were shut down due to power failures,
thus allowing for improved margins in early 1998.

Overall retail  margins  increased 4.6 cents per gallon to 26.8 cents per gallon
in 1997 as  compared to 1996,  reflecting  more stable  market  conditions  as a
result of the  Company's  "Value Plus" pricing  program  initiated in the second
half of 1996,  and the Home Heat and  Cardlock  segments'  ability  to  maintain
prices as crude oil prices declined.  Retail marketing volumes increased 5.1% in
1997 as compared to 1996,  to 64,000  bpd, as a result of  acquiring  three home
heating oil  businesses  in 1997,  and  converting 55  agent-operated  stores to
Company-owned convenience stores.

Selling,  general and  administrative  expenses for 1997 of $167.4  million were
$5.8 million lower than in 1996,  principally  due to the  previously  mentioned
cost reductions and synergies from the Merger.

Corporate Expenses

Despite  significantly  lower average working capital  borrowings,  net interest
expense of $120.2  million  in 1997 was $10.1  million  higher  than in 1996 due
primarily to the assumption of approximately  $400.0 million of debt at the time
of the Total  Acquisition and a reduction in the amount of interest  capitalized
on property, plant and equipment additions.

The  consolidated  income  tax  provisions  for  1997  totaled  $110.2  million,
representing  an effective  tax rate of 40.0% as compared to the 1996  effective
income tax benefit of ($4.3)  million or 10.7%.  The 1996 effective tax rate was
low  due to  non-deductible  Merger  and  other  costs  recorded  in  1996.  The
consolidated effective income tax rates exceed the U.S. Federal statutory income
tax  rate  primarily  due to State  income  taxes  and the  effects  of  foreign
operations.

Year Ended December 31, 1996, Compared to Year Ended December 31, 1995

Financial and operating data by geographic area for the years ended December 31,
1996 and 1995 are as follows:
<TABLE>
<CAPTION>
Financial Data:

                                                              Years Ended December 31,
                                                  1996                             1995
                                       -----------------------------        -------------------------------------
                                       Southwest   Northeast   Total        Southwest(3)    Northeast       Total
                                                                    (in millions)
<S>                                    <C>         <C>         <C>          <C>             <C>         <C>
Sales and other revenues.............  $7,161.6    $3,046.8    $10,208.4    $5,432.2        $2,651.3    $8,083.5
Cost of products sold................   4,728.9     1,821.1      6,550.0     3,324.3         1,538.8     4,863.1
Operating expenses...................     802.4       125.7        928.1       553.4           118.9       672.3
Selling, general and
   administrative expenses...........     128.8       173.2        302.0        89.6           165.1       254.7
Taxes other than income taxes........   1,278.4       822.7      2,101.1     1,215.7           714.6     1,930.3
Depreciation and amortization........     153.5        26.4        179.9       111.4            24.9       136.3
Merger and integration costs(1)......        -           -          77.4          -               -           -
                                       --------    --------                 --------        --------    --------
Operating income.....................  $   69.6    $   77.7         69.9    $  137.8        $   89.0       226.8
Interest income......................  ========    ========         18.4    ========        ========        13.4
Interest expense.....................                             (128.5)                                  (93.1)
                                                               ---------                                --------  
(Loss) income before income taxes
and cumulative effect of accounting
change...............................                              (40.2)                                  147.1
Provision (benefit) for income taxes                                (4.3)                                   52.1
Cumulative effect of accounting
change(2)............................                                 -                                     22.0
                                                               ----------                                -------
Net (loss) income....................                          $   (35.9)                                $ 117.0
                                                               ==========                                =======
</TABLE>

(1) In connection with the Merger,  the Company  recorded merger and integration
costs of $77.4  million  ($53.0  million net of income tax  benefit)  during the
fourth  quarter of 1996.  Such costs  consisted of $13.1  million of  financial,
legal and registration  fees and $64.3 million related to workforce  reductions,
writedowns of facilities and equipment, and other costs.

(2) In the second quarter of 1995, the Company  changed its method of accounting
for refinery  maintenance  turnaround costs from an accrual method to a deferral
method  to  better  match  revenues  and  expenses.  The  change  resulted  in a
cumulative adjustment through December 31, 1994, of $22.0 million (net of income
taxes of $13.4 million).

(3) On December 14, 1995, Diamond Shamrock acquired NCS for approximately $280.0
million.  The  acquisition  was  accounted  for using the  purchase  method and,
accordingly,  the results of  operations  of NCS are  included  from the date of
acquisition.

Operating Data:
                                                              Years Ended
                                                               December 31,
                                                       1996             1995
                                                       ----             ----
Southwest

  McKee and Three Rivers Refineries:
    Throughput (bpd)............................    235,500            210,900
    Margin (dollars per barrel).................       3.61               3.49

  Wilmington Refinery:
    Throughput (bpd)............................    102,700             75,100
    Margin (dollars per barrel).................       4.66               4.38

  Retail Marketing:
    Fuel volume (bpd)...........................    107,400             79,800
    Fuel margin (cents per gallon)..............       12.7               13.8
    Merchandise sales ($1,000/day)..............      2,416              1,114
    Merchandise margin (%)......................       30.6               30.0

Northeast

  Quebec Refinery:
    Throughput (bpd)............................    143,900            135,000
    Margin (dollars per barrel) (1).............       3.15               2.33

  Retail Marketing:
    Fuel volume (bpd)...........................     60,900             56,400
    Overall margin (cents per gallon) (1) (2)...       22.2               26.3

(1)  Effective  January 1, 1996,  the  Company  modified  its policy for pricing
refined products transferred from its Quebec Refinery to its Northeast marketing
operations  to more  closely  reflect  the spot market  prices for such  refined
products.  To facilitate the comparison to the operating data for the year ended
December 31, 1996,  the amounts  reported for the year ended  December 31, 1995,
have been adjusted to reflect the pricing policy change as if it had occurred on
January 1, 1995. The refining margin and retail marketing fuel margin originally
reported  for the year ended  December  31,  1995,  were  $3.42 and  22.9(cent),
respectively.

(2) Retail  marketing  overall  margin  reported for the Northeast  represents a
blend of gross margin from Company and dealer  operated  retail stores,  heating
oil sales and the cardlock business segment.

Summary

The net loss for the year ended  December 31,  1996,  was $35.9  million,  which
included a pre-tax  charge of $77.4  million  ($53.0  million  after  income tax
benefit) for  transaction and  integration  costs  associated with the Merger on
December 3, 1996. In the Southwest,  operating  income was $69.6 million for the
year ended  December 31, 1996, a decrease of $68.2  million from the 1995 level,
due primarily to increased  operating expenses and depreciation  expense related
to the acquisition of NCS in December 1995. Also included in operating  expenses
is a $50.4 million  one-time  non-cash  charge recorded in the fourth quarter of
1996 to conform accounting  practices between Diamond Shamrock and Ultramar.  In
the  Northeast,  operating  income was $77.7 million for the year ended December
31, 1996, a decrease of $11.3 million from the 1995 level.

Southwest Operations

Sales and other  revenues in the Southwest  for 1996 totaled $7.2 billion,  $1.7
billion or 31.8% higher than in 1995,  as average  product  prices  increased by
21.7% and product  sales volume  increased by 13.6% to 416,600 bpd.  Product and
merchandise  sales volumes  increased  substantially  over 1995,  primarily as a
result of the December 1995 acquisition of NCS.

The refining margin at the McKee and Three Rivers  Refineries  increased by 3.4%
to $3.61 per barrel in 1996,  reflecting crude oil price  volatility  during the
year.  Refining margin at the Wilmington Refinery increased by 6.4% to $4.66 per
barrel  in  1996  due to an  improvement  in the  heavy  sour  crude  oil  price
differential.  Refinery  throughput  at the McKee and  Three  Rivers  Refineries
during 1996  increased by 11.7% to 235,500 bpd as several  upgrade and expansion
projects were completed during the year.  Throughput at the Wilmington  Refinery
in 1996 increased by 36.8% to 102,700 bpd,  principally  due to the operation of
the Refinery's new gas oil hydrotreater. In addition, refinery throughput at the
Wilmington  Refinery in 1995 was adversely  affected as refinery units were down
on  several  occasions  to tie in  units  required  to make  CARB  specification
gasoline and to replace the crude oil heater  destroyed by a 1995  explosion and
fire.   Retail  marketing  fuel  volume  increased  by  34.6%  to  107,400  bpd,
principally as a result of the December 1995 NCS acquisition, which included 661
Stop N Go convenience stores;  however,  not all Stop N Go stores sold gasoline.
The retail  marketing fuel margin  decreased by 8.0% to 12.7 cents per gallon in
1996, due to intense competitive pressures in the California and Texas markets.

Merchandise  sales at the  Company's  convenience  stores more than doubled from
$1.1  million per day in 1995 to $2.4 million per day in 1996 as a result of the
NCS  acquisition.  Merchandise  margins  for the  years  1996 and 1995  remained
relatively constant at 30.6% and 30.0%, respectively.

Operating expenses increased $249.0 million in 1996 to $802.4 million, primarily
as a result of increased  marketing expenses  associated with the NCS operations
acquired in December 1995. In addition, the Company recorded a one-time non-cash
charge of $50.4  million to conform the  accounting  practices  between  Diamond
Shamrock and Ultramar.

Selling,  general and  administrative  expenses  during  1996 of $128.8  million
increased by $39.2 million or 43.8% from 1995, as a result of the NCS operations
and the Merger, effective December 3, 1996.

Northeast Operations

Sales and other revenues in the Northeast for 1996 totaled $3.0 billion,  $395.5
million or 14.9% higher than in 1995,  as average  product  prices  increased by
11.6% and  product  sales  volume  increased  by 6.0% to  159,000  bpd.  Cost of
products sold, as a percentage of sales, increased by 1.7% compared to 1995.

Refining  margin  increased  35.2% to $3.15 per  barrel in 1996,  from $2.33 per
barrel in 1995, as a result of higher  average  Atlantic Basin crack spreads and
the ability to process low cost Heidrun crude oil for all of 1996 as compared to
only one month in 1995.  Throughput at the Quebec Refinery  averaged 143,900 bpd
in 1996, or 6.6% higher than in 1995, as 1995 throughput was adversely  affected
by refinery  downtime  while work was performed to configure the refinery to run
lower cost acidic  crude oils such as Heidrun.  Retail fuel margin  decreased by
4.1 cents per  gallon,  or 15.6%,  to 22.2 cents per  gallon  from 1995 to 1996,
reflecting continued competitive pressures on motorist margins and the impact of
higher  distillate  wholesale  prices on both  heating  oil and  cardlock  sales
through  the first ten months of 1996.  Retail  marketing  fuel  volume for 1996
increased  8.0% from 1995,  to 60,900 bpd, as a result of the Company  expanding
home heating oil operations and the  implementation  of the "Value Plus" program
in the Canadian retail gasoline operations late in the second quarter of 1996.

Refining operating  expenses,  before  depreciation,  totaled $50.7 million,  or
$0.96 per  barrel in 1996,  compared  to $46.1  million,  or $0.94 per barrel in
1995.  Refinery operating expenses in 1996 reflect increased  throughput as well
as the incremental  additive and chemical costs  associated with running Heidrun
crude oil. Selling, general and administrative expenses of $173.2 million during
1996 were $8.1 million  higher than in 1995,  principally  due to the previously
mentioned  acquisition  of home heating oil and  distribution  operations in the
Northeast United States during 1996 and the one-time cost related to the rollout
of the "Value Plus" program.

Corporate Expenses

Net  interest  expense  totaled  $110.1  million for 1996,  an increase of $30.4
million or 38.1% over the 1995 level, as average borrowings  increased from $1.2
billion  in 1995 to $1.6  billion in 1996 as a result of  additional  borrowings
used to finance the NCS acquisition in December 1995. The average  interest rate
on the Company's borrowings was 8.2% for 1996 as compared to 8.7% for 1995.

As a result of recognizing  $77.4 million in merger and integration  costs,  the
Company incurred a net loss for 1996; however,  certain of the merger costs were
non-deductible  for income tax purposes,  thus the effective  income tax benefit
rate for 1996 was (10.7%).  This  compares to an effective  tax rate of 35.4% in
1995.

Outlook

The Company's  earnings depend largely on refining and retail marketing margins.
The  petroleum  refining and  marketing  industry  has been and  continues to be
volatile and highly competitive.  The cost of crude oil purchased by the Company
as well as the price of refined  products  sold by the Company  have  fluctuated
significantly  in the past.  As a result of the historic  volatility of refining
and  marketing  margins and the fact that they are affected by numerous  diverse
factors, it is impossible to predict future margin levels.

During the latter part of the fourth quarter of 1997 and  continuing  into 1998,
crude oil prices have  declined  significantly  from the same period a year ago.
The  decline  in crude oil prices is the result of Saudi  Arabia  indicating  in
November  1997 that it would  increase  production,  the milder  winter  weather
brought  about  by the  phenomenon  known as El Nino,  and the  likelihood  that
economic  turmoil in southeast  Asia will trim demand.  Continued  unrest in the
Middle East has added a great deal of  uncertainty  to what will happen to crude
oil prices for the rest of the first quarter and throughout the balance of 1998.
Should any military  action occur,  the impact on production  and  deliveries of
Middle  East crude oil will more than  likely  spike  crude oil prices  industry
wide. In general,  low  distillate  demand has put downward  pressure on product
prices,  which has not been entirely offset by the lower crude oil prices,  thus
squeezing refinery margins.  Should crude oil prices remain at levels materially
lower than December 31, 1997 prices,  the Company will be required to reduce the
carrying value of its crude oil inventories.

West  Coast  refining  margins  have  remained  stronger  than most of the other
regions of the  country  as the first  quarter  of 1998  begins,  and the retail
margins  continue to be strong;  however,  retail  volumes have been affected in
some areas due to heavy California  rains.  Mid-Continent  refining margins have
declined as we enter the first quarter of 1998 and retail  margins have remained
steady with levels of the fourth  quarter of 1997.  Merchandise  margins for the
first quarter of 1998 are expected to remain  constant  with levels  obtained in
the fourth quarter of 1997.

In eastern Canada,  refining margins have declined in the first quarter of 1998,
while retail  margins  continued  to be strong.  The Quebec  Refinery,  which is
located north of the area affected by the recent ice storms, was able to operate
while  other  refineries  were  forced to shut down.  Demand for heating oil has
strengthened, helping maintain retail heating oil prices; however, not at normal
winter volume levels. See "Certain Forward Looking Statements."

Environmental Matters

The  Company's  operations  are subject to  environmental  laws and  regulations
adopted by various  governmental  authorities in the  jurisdictions in which the
Company  operates.  The Company  has  accrued  liabilities  for  estimated  site
restoration  costs to be  incurred  in the  future  at  certain  facilities  and
properties.  In addition,  the Company has accrued liabilities for environmental
remediation  obligations at various sites, including the multiparty sites in the
Southwest  where the Company has been  identified as a  potentially  responsible
party. Under the Company's accounting policy, liabilities are recorded when site
restoration and  environmental  remediation  and cleanup  obligations are either
known or considered probable and can be reasonably estimated. As of December 31,
1997 and 1996,  accruals for  environmental  matters  amounted to $213.9 million
(including  $79.7 million  related to Total) and $151.4  million,  respectively.
Charges to income for environmental  matters during the years ended December 31,
1997 and 1996,  were $1.3 million and $41.7  million,  respectively.  Charges in
1995 were not significant.

Capital Expenditures

The  refining  and  marketing  of  petroleum  products  is a  capital  intensive
business.  Significant capital  requirements  include expenditures to upgrade or
enhance refinery  operations to meet environmental  regulations and maintain the
Company's  competitive  position,  as well as to  acquire,  build  and  maintain
broad-based  retail  networks.   The  capital   requirements  of  the  Company's
operations  consist  primarily of (i) reliability,  environmental and regulatory
expenditures,  such as those  required to  maintain  equipment  reliability  and
safety and to address  environmental  regulations  (including  reformulated fuel
specifications,  stationary  source emission  standards and underground  storage
tank  regulations);  and (ii)  growth  opportunity  expenditures,  such as those
planned to expand and upgrade its retail  marketing  business,  to increase  the
capacity of certain  refinery  processing  units and  pipelines and to construct
additional petrochemical processing units.

During the year ended December 31, 1997,  capital  expenditures and acquisitions
of marketing  operations totaled $267.9 million, of which $166.9 million related
to growth opportunity  expenditures.  Growth opportunity spending included $26.7
million for the benzene/toluene/xylene (BTX) extraction unit at the Three Rivers
Refinery, which started up in May 1997. Other growth opportunity spending during
1997 included $13.9 million to upgrade the fluid catalytic  cracking unit (FCCU)
to  increase  production  yields  at the  Quebec  Refinery,  $15.7  million  for
expansion  of the two existing  propane/propylene  splitters at Mont Belvieu and
$4.7 million to increase  pipeline and terminal  capacity in Denver, El Paso and
Albuquerque.

In  conjunction  with its plans to  expand  and  upgrade  its  retail  marketing
operations,  the Company also spent $75.1  million  related to retail  marketing
growth  projects  ($2.4  million  of which was lease  financed),  including  the
acquisition of three retail home heating oil operations in the northeast  United
States and the completion of 27 new  convenience  stores in Arizona,  California
and Colorado.

The  Company  is  continually  investigating  strategic  acquisitions  and other
business opportunities,  some of which may be material, that will complement its
current business activities. For fiscal year 1998, the Company has established a
capital projects budget of approximately  $320.7 million,  which includes $168.0
million of growth  opportunity  projects and $142.7 million of  reliability  and
regulatory projects.  These budgeted amounts are reviewed throughout the year by
management and are subject to change based on other opportunities that arise.

The Company expects to fund its capital expenditures over the next several years
from cash provided by operations and, to the extent necessary, from the proceeds
of borrowings  under its bank credit  facilities  and its  commercial  paper and
medium-term  note programs  discussed  below.  In addition,  depending  upon its
future needs and the cost and  availability of various  financing  alternatives,
the Company may, from time to time, seek additional debt or equity  financing in
the public or private markets.

Liquidity and Capital Resources

As of December  31,  1997,  the Company had cash and cash  equivalents  of $92.0
million.  The Company  currently has two committed,  unsecured  bank  facilities
which  provide a maximum of $700.0  million  U.S.  and $200.0  million  Cdn.  of
available credit, and a $700.0 million commercial paper program supported by the
committed, unsecured U.S. bank facility.

On June 25, 1997, UDS Capital I (the Trust),  a  wholly-owned  subsidiary of the
Company,  issued $200.0 million of 8.32% Trust Originated  Preferred  Securities
(TOPrS)  in an  underwritten  public  offering.  The TOPrS  represent  preferred
undivided  interests in the Trust's  assets,  with a  liquidation  preference of
$25.00 per  security.  Distributions  on the TOPrS are  cumulative  and  payable
quarterly in arrears, at the annual rate of 8.32% of the liquidation amount. The
Company has fully and unconditionally  guaranteed,  on a subordinated basis, the
dividend  payments due on the TOPrS. The proceeds from the issuance of the TOPrS
were used to reduce long-term debt of the Company.

On September  25, 1997,  the Company  completed the  acquisition  of 100% of the
common stock of Total, a Denver, Colorado based petroleum refining and marketing
company.  Total had 6,000  employees  and operated the Ardmore,  Alma and Denver
Refineries.  The three refineries have a combined capacity of 147,000 barrels of
crude  oil  per  day.  Total  distributed   gasoline  and  merchandise   through
approximately   2,100  branded  outlets,   of  which   approximately   560  were
company-operated.  The purchase price included the issuance of 12,672,213 shares
of  Company   Common  Stock  and  the  assumption  of  $460.5  million  of  debt
outstanding. On September 25, 1997, the Company repaid most of the debt of Total
with the proceeds of a $150.0 million  short-term  bridge loan provided by three
banks and with the proceeds from the issuance of commercial paper and borrowings
under uncommitted bank credit lines. 

On October 14, 1997, the Company  completed a public  offering of $400.0 million
of senior notes (the Total Senior Notes) to refinance  most of the debt incurred
to finance the acquisition of Total. The Total Senior Notes were issued in three
separate series.  The 7.20% Notes due October 15, 2017 (the 2017 Notes) totaling
$200.0  million,  the 6.75% Notes due October 15, 2037 (the 2037 Notes) totaling
$100.0  million,  and the 7.45%  Notes due  October  15,  2097 (the 2097  Notes)
totaling  $100.0  million.  Interest  on  the  Total  Senior  Notes  is  payable
semi-annually in arrears on April 15 and October 15 of each year. The 2017 Notes
and the 2097 Notes may be redeemed at any time at the option of the Company,  in
whole or in part, at a redemption  price equal to the greater of (a) 100% of the
principal amount,  or (b) the sum of the present value of outstanding  principal
and  interest  thereon  discounted,  at the U.S.  Treasury  Yield  plus 20 basis
points,  together with accrued interest, if any, to the date of redemption.  The
2037 Notes may be redeemed,  in whole or in part,  by the holders on October 15,
2009,  at a  redemption  price equal to 100% of the  principal  plus accrued and
unpaid  interest.  After October 15, 2009,  the 2037 Notes are redeemable at the
option of the Company in the same manner as the 2017 Notes and 2097 Notes.

As of December 31, 1997, the Company had approximately  $592.3 million remaining
borrowing  capacity  under its committed bank  facilities  and commercial  paper
program. In addition to its committed bank facilities, on December 31, 1997, the
Company  had   approximately   $479.4   million  of  borrowing   capacity  under
uncommitted,  unsecured  short-term  lines  of  credit  with  various  financial
institutions.

In  addition  to its bank credit  facilities,  the  Company  had $300.0  million
available  under  universal  shelf  registrations   previously  filed  with  the
Securities and Exchange Commission. Subsequent to December 31, 1997, the Company
filed an amendment to the universal  shelf  registration,  increasing the amount
available to $1.0  billion.  The net proceeds  from any debt or equity  offering
under the existing  universal  shelf  registrations  would add to the  Company's
working capital and would be available for general corporate purposes.

The  Company  also has $77.8  million  available  pursuant  to  committed  lease
facilities aggregating $355.0 million, under which the lessors will construct or
acquire and lease to the Company primarily retail stores.

The Bank facilities and other debt agreements  require that the Company maintain
certain  financial  ratios and other  restrictive  covenants.  The Company is in
compliance  with such covenants and believes that such covenants will not have a
significant  impact on the Company's  liquidity or its ability to pay dividends.
The Company  believes its current sources of funds will be sufficient to satisfy
its capital expenditure, working capital, debt service and dividend requirements
for at least the next twelve months.

On February 4, 1998,  the Board of  Directors  declared a quarterly  dividend of
$0.275  per  Common  Share  payable  on March 5,  1998,  to holders of record on
February 20,  1998.  In  addition,  the Board of Directors  declared a quarterly
dividend  of  $0.625  per  share  on the  Company's  5%  Cumulative  Convertible
Preferred  Stock payable on March 13, 1998, to holders of record on February 20,
1998.

Cash Flows For The Year Ended December 31, 1997

During the year ended December 31, 1997,  the Company's cash position  decreased
$105.9 million to $92.0 million.  Net cash provided by operating  activities was
$235.2  million due to increased net income and  management's  efforts to reduce
receivable and inventory  levels,  which were  partially  offset by decreases in
current payables and other long-term liabilities.

Net cash used in investing  activities  during the year ended December 31, 1997,
totaled  $614.0  million,  including  $402.4  million for the purchase of Total.
Other cash outflows were for scheduled  capital  expenditures  of $247.1 million
and the acquisition of marketing operations for $20.8 million, and cash received
of $93.8 million was related to proceeds  from the sales of property,  plant and
equipment.

Net cash  provided by financing  activities  during the year ended  December 31,
1997,  totaled $271.9 million,  primarily due to the issuance of preferred stock
of a subsidiary of $200.0 million and increased  long-term  borrowings of $415.9
million  associated  primarily  with the Total  acquisition.  During  1997,  the
Company  repaid  $189.2  million  of  commercial   paper  and  other  short-term
borrowings.  For 1997,  the Company  declared and paid cash  dividends  totaling
$89.8  million  on  its  outstanding  Common  Stock  ($1.10  per  share)  and 5%
Cumulative  Convertible  Preferred Stock ($2.50 per share), an increase of $20.0
million over dividend payments made in 1996 which totaled $69.8 million.

Derivative Financial Instruments

The Company uses interest rate swaps,  foreign exchange  contracts and commodity
futures,  option and price swap  contracts  to manage its  exposure  to interest
rates,  foreign  currency  exchange rates and commodity  price  volatility.  The
Company controls its derivative  positions based on their  underlying  principal
values and does not use such agreements with the intent of producing speculative
gains. The Company does not use complex leveraged derivative  transactions.  See
Notes to Consolidated Financial Statements - Note 17 Financial Instruments.

Exchange Rates

The value of the  Canadian  dollar  relative  to the U.S.  dollar  has  weakened
substantially  since  the  acquisition  of  the  Canadian  operations  in  1992.
Subsequent  to December 31,  1997,  the Canadian  dollar set an  historical  low
against the U.S. dollar. As the Company's Canadian operations are in a net asset
position, the weaker Canadian dollar has reduced, in U.S. dollars, the Company's
net equity as of December  31,  1997,  by $78.2  million.  Although  the Company
expects the exchange rate to fluctuate during 1998, it cannot reasonably predict
its future movement.

With the exception of its crude oil costs,  which are U.S.  dollar  denominated,
fluctuations  in the Canadian  dollar  exchange rate will affect the U.S. dollar
amount of  revenues  and related  costs and  expenses  reported by the  Canadian
operation. The potential impact on refining margin of fluctuating exchange rates
together  with U.S.  dollar  denominated  crude oil  costs is  mitigated  by the
Company's pricing policies in the Northeast,  which generally pass on any change
in the cost of crude  oil.  Marketing  margins,  on the  other  hand,  have been
adversely affected by exchange rate fluctuations as competitive  pressures have,
from  time to time,  limited  the  Company's  ability  to  promptly  pass on the
increased  costs to the ultimate  consumer.  The Company has considered  various
strategies to manage  currency  risk,  and it hedges the Canadian  currency risk
when such hedging is considered economically appropriate.

Impact of Year 2000 Issue

The Year 2000 issue is the result of using two digits rather than four digits to
define a year within older computer software and hardware configurations.  Older
programs and equipment,  which are  date-sensitive,  may recognize a "00" as the
year 1900  instead of the year 2000.  This could  result in system  failures  or
miscalculations  causing  disruptions  of  operations,  including,  among  other
things, a temporary inability to process transactions,  send invoices, or engage
in similar normal business activities.

The Company's U.S.  information  technology (IT) systems are  substantially  all
year 2000 compliant as a result of  implementing  a new IT system in 1995,  with
the exception of the Total IT system  recently  acquired.  The Company is in the
process of migrating Total's operation into the new IT system, which is expected
to be  completed  by June  1998 at a cost of  approximately  $4.3  million.  The
Company's Canadian IT system is currently not year 2000 compliant.  However, the
joint  venture,  into which the Canadian  operations are being  contributed,  is
currently  implementing a new IT system,  which will be year 2000 compliant when
implemented  in  October  1998.  The  Company's  share of the cost of the  joint
venture system is estimated to be $5.4 million.

Beyond the IT  systems,  the Company is in the  process of  reviewing  all other
critical operating functions and significant  suppliers/vendors to determine the
extent to which the Company is  vulnerable to year 2000  situations.  Based on a
preliminary  assessment,  the Company  believes that it will be able to make all
necessary  conversions  to be year 2000  compliant by December 31, 1998, and the
impact of such compliance is not expected to have a material effect on financial
position or the results of operations.

Impact of Inflation

Although  inflation has slowed in recent years, it is still a factor in the U.S.
and  Canadian  economies,  increasing  the cost to acquire or replace  property,
plant  and  equipment  and  increasing  the  costs of  supplies  and  labor.  As
previously  noted, to the extent  permitted by  competition,  the Company passes
along increased costs to its customers.

In addition, the Company is affected by volatility in the cost of crude oils and
refined  petroleum  products  as market  conditions  continue  to be the primary
factor in determining the costs of the Company's products.  The Company uses the
LIFO method of accounting for its  inventories.  Under this method,  the cost of
products sold reported in the financial statements approximates current costs.

New Accounting Pronouncements

The Financial  Accounting  Standards Board (FASB) issued  Statement of Financial
Accounting  Standards  (SFAS)  No.  131,   "Disclosures  about  Segments  of  an
Enterprise and Related  Information,"  in June 1997. This statement  establishes
new  standards  for  the  way  business  enterprises  report  information  about
operating  segments  in annual  financial  statements  and  requires  that those
enterprises  report selected  information  about  operating  segments in interim
financial statements issued to shareholders.  It also establishes  standards for
related  disclosures  about products and services,  geographic  areas, and major
customers.  SFAS No. 131 is  effective  for  financial  statements  for  periods
beginning  after  December  15,  1997.  In  the  initial  year  of  application,
comparative information for earlier years is to be restated. This statement need
not be applied  for interim  financial  statements  in the  initial  year of its
application, but comparative information for interim periods in the initial year
of application is to be reported in financial  statements for interim periods in
the second year of  application.  The Company plans to adopt SFAS No. 131 in the
fourth quarter of 1998.

The FASB issued SFAS No. 130,  "Reporting  Comprehensive  Income," in June 1997.
This statement  establishes standards for reporting and display of comprehensive
income and its components (revenues,  expenses, gains, and losses) in a full set
of general-purpose financial statements.  This statement requires that all items
that are required to be recognized under  accounting  standards as components of
comprehensive income be reported in a financial statement that is displayed with
the same prominence as other financial statements. SFAS No. 130 requires that an
enterprise  classify  items of other  comprehensive  income by their  nature and
display the accumulated  balance of other  comprehensive  income separately from
retained  earnings and additional  paid-in  capital in the equity section of the
balance sheet. SFAS No. 130 does not require a specific format for the financial
statement but requires that an enterprise  display an amount  representing total
comprehensive income for the period in that financial statement. SFAS No. 130 is
effective for fiscal years beginning after December 15, 1997.  Reclassifications
of financial statements for earlier periods provided is required for comparative
purposes.  The Company plans to adopt SFAS No. 130 in the first quarter of 1998,
which will require the reclassification of certain previously reported amounts.

In February  1997,  the FASB issued SFAS No. 128,  "Earnings  Per Share,"  which
establishes  new  standards  for  computing  and  presenting  earnings per share
("EPS") for entities with publicly  held common stock.  SFAS No. 128  simplifies
the standards for computing EPS previously found in Accounting  Principles Board
Opinion No. 15, "Earnings Per Share," and makes them comparable to international
EPS standards.  It replaces the  presentation of primary EPS with a presentation
of basic EPS, and  requires  dual  presentation  of basic and diluted EPS on the
face of the income statement. SFAS No. 128 is effective for periods ending after
December 15, 1997, and early adoption is not permitted. The Company adopted SFAS
No. 128  effective  December 31,  1997,  and  accordingly,  all prior period EPS
amounts and  weighted  average  number of share  amounts  have been  restated to
conform with the new requirements.

Certain Forward Looking Statements

This Annual Report on Form 10-K and the Proxy Statement,  incorporated herein by
reference,  contain certain "forwardlooking"  statements as such term is defined
in the U.S.  Private  Securities  Litigation  Reform Act of 1995 and information
relating to the Company  and its  subsidiaries  that are based on the beliefs of
management as well as assumptions made by and information currently available to
management.  When used in this Annual Report or the Proxy  Statement,  the words
"anticipate," "believe," "estimate," "expect," "intend" and similar expressions,
as they  relate to the  Company  or its  subsidiaries  or  management,  identify
forward-looking  statements.  Such  statements  reflect  the  current  views  of
management  with  respect  to future  events and are  subject to certain  risks,
uncertainties  and  assumptions  relating  to  the  operations  and  results  of
operations,  including as a result of competitive factors and pricing pressures,
shifts in market demand and general economic conditions and other factors.

Should one or more of these risks or  uncertainties  materialize,  or should any
underlying  assumptions  prove  incorrect,  actual  results or outcomes may vary
materially from those  described  herein as  anticipated,  believed,  estimated,
expected or intended.

ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

                    Report of Independent Public Accountants

To Ultramar Diamond Shamrock Corporation:

We have audited the accompanying  consolidated balance sheet of Ultramar Diamond
Shamrock Corporation (a Delaware  corporation) and subsidiaries (the Company) as
of December  31, 1997 and the related  consolidated  statements  of  operations,
stockholders'  equity and cash flows for the year then  ended.  These  financial
statements   are  the   responsibility   of  the   Company's   management.   Our
responsibility  is to express an opinion on these financial  statements based on
our audit.

We conducted our audit in accordance with generally accepted auditing standards.
Those standards  require that we plan and perform the audit to obtain reasonable
assurance   about  whether  the  financial   statements  are  free  of  material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the  accounting  principles  used and  significant  estimates  made by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audit provides a reasonable basis for our opinion.

In our opinion,  the financial  statements  referred to above present fairly, in
all material  respects,  the  financial  position of Ultramar  Diamond  Shamrock
Corporation  and  subsidiaries as of December 31, 1997, and the results of their
operations  and their  cash  flows for the year then  ended in  conformity  with
generally accepted accounting principles.

Our audit was made for the purpose of forming an opinion on the basic  financial
statements taken as a whole. The schedule  included under Part IV, Item 14(d) is
presented for purposes of complying with the Securities and Exchange Commissions
rules and are not part of the basic financial statements. This schedule has been
subjected to the auditing procedures applied in the audit of the basic financial
statements  and, in our  opinion,  fairly  state in all  material  respects  the
financial  data  required  to be set  forth  therein  in  relation  to the basic
financial statements taken as a whole.


                                        /s/ ARTHUR ANDERSEN LLP

San Antonio,  Texas
February 27, 1998


                         Report of Independent Auditors


Board of Directors and Stockholders
Ultramar Diamond Shamrock Corporation:

We have audited the accompanying  consolidated balance sheet of Ultramar Diamond
Shamrock  Corporation  (formerly Ultramar  Corporation) as of December 31, 1996,
and the related consolidated statements of operations,  stockholders' equity and
cash flows for each of the two years in the period ended  December 31, 1996. Our
audits also included the 1996 and 1995 financial  statement  schedule  listed in
the  Index at Item  14(a).  These  financial  statements  and  schedule  are the
responsibility of the Company's management.  Our responsibility is to express an
opinion on these financial  statements and schedule based on our audits.  We did
not audit the consolidated  balance sheet of the Diamond Shamrock  operations as
of December  31, 1996 and the related  consolidated  statements  of  operations,
stockholders'  equity  and cash  flows for each of the two  years in the  period
ended  December  31,  1996,  which  financial  statements  reflect  total assets
constituting 50% in 1996 and total revenues  constituting 49% in 1996 and 46% in
1995 of the  related  consolidated  totals,  and the  1996  and  1995  financial
statement  schedule of the Diamond  Shamrock  operations  listed in the Index at
Item 14(a).  Those  financial  statements  and  schedule  were  audited by Price
Waterhouse LLP whose report has been furnished to us, and our opinion,  in sofar
as it relates to data  included for the Diamond  Shamrock  operations,  is based
solely on the report of Price Waterhouse LLP.

We  conducted  our  audits  in  accordance  with  generally   accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the  accounting  principles  used and  significant  estimates  made by
management,  as well as evaluating the overall financial statement presentation.
We  believe  our  audits  and the  report  of Price  Waterhouse  LLP  provide  a
reasonable basis for our opinion.

In our opinion,  based on our audits and the report of Price Waterhouse LLP, the
consolidated  financial  statements  referred to above  present  fairly,  in all
material  respects,  the  consolidated  financial  position of Ultramar  Diamond
Shamrock  Corporation as of December 31, 1996, and the  consolidated  results of
its  operations and its cash flows for each of the two years in the period ended
December 31, 1996, in conformity with generally accepted accounting  principles.
Also,  in our  opinion,  based on our audits and the report of Price  Waterhouse
LLP, the related 1996 and 1995 financial statement schedule,  when considered in
relation to the basic financial statements taken as a whole, presents fairly, in
all material respects the information set forth therein.

As discussed in Note 5 to the consolidated  financial  statements,  in 1995, the
Company  changed its method of accounting  for refinery  maintenance  turnaround
costs.


                                                      /s/ ERNST & YOUNG LLP

San Antonio,  Texas
February 7, 1997


                        Report of Independent Accountants


To the Board of Directors and Stockholders of
Ultramar Diamond Shamrock Corporation:

In our opinion,  the  consolidated  balance  sheet and the related  consolidated
statements  of  operations,  of  stockholders'  equity and of cash flows present
fairly, in all material respects, the financial position of the Diamond Shamrock
operations of Ultramar Diamond Shamrock  Corporation as of December 31, 1996 and
the  results of their  operations  and their cash flows for each of the years in
the two year period ended  December  31,  1996,  in  conformity  with  generally
accepted accounting principles.  These consolidated financial statements are the
responsibility of the Ultramar Diamond Shamrock  Corporation's  management;  our
responsibility is to express an opinion on the consolidated financial statements
based on our audits.  We conducted our audits of these  financial  statements in
accordance with generally accepted auditing standards which require that we plan
and perform the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement.  An audit includes examining, on a
test basis,  evidence  supporting  the amounts and  disclosures in the financial
statements.  An audit also includes assessing the accounting principles used and
significant  estimates made by management  and evaluating the overall  financial
statement presentation. We believe our audits provide a reasonable basis for the
opinion expressed above.


/s/ PRICE WATERHOUSE LLP


San Antonio,  Texas
February 7, 1997



<TABLE>
<CAPTION>
                      ULTRAMAR DIAMOND SHAMROCK CORPORATION
                           CONSOLIDATED BALANCE SHEETS

                                                                                              December 31,
                                                                                         1997             1996
                                                                                   ----------------    ------------
                                                                                   (in millions, except share data)

<S>                                                                                <C>                <C>
                                      Assets
Current assets:
   Cash and cash equivalents...................................................    $   92.0           $   197.9
   Accounts and notes receivable, less allowances for uncollectible
     accounts of $16.2 million in 1997 and $15.4 million in 1996...............       673.9               503.1
   Inventories.................................................................       741.0               633.3
   Prepaid expenses and other current assets...................................        53.1                35.0
   Deferred income taxes.......................................................        50.8                30.0
                                                                                   --------           ---------
      Total current assets.....................................................     1,610.8             1,399.3
                                                                                   --------           ---------

Property, plant and equipment..................................................     4,654.3             3,685.2
Less accumulated depreciation and amortization.................................    (1,093.3)             (954.4)
                                                                                   --------           ---------
                                                                                    3,561.0             2,730.8
Other assets, net..............................................................       422.9               289.9
                                                                                   --------           ---------
    Total assets...............................................................    $5,594.7            $4,420.0
                                                                                   ========            ========

                        Liabilities and Stockholders' Equity
Current liabilities:
   Notes payable and current portion of long-term debt.........................    $    6.5           $     3.2
   Accounts payable............................................................       661.7               540.7
   Accrued liabilities.........................................................       331.9               328.9
   Taxes other than income taxes...............................................       237.2               191.3
   Income taxes payable........................................................        13.4                32.1
                                                                                   --------           ---------
      Total current liabilities................................................     1,250.7             1,096.2

Long-term debt, less current portion...........................................     1,866.4             1,646.3
Other long-term liabilities....................................................       403.5               349.6
Deferred income taxes..........................................................       187.5                87.0
Commitments and contingencies

Company obligated preferred stock of subsidiary................................       200.0                  -

Stockholders' equity:
   5% Cumulative Convertible Preferred Stock, par value $0.01 per share:
     25,000,000 shares authorized, 1,724,400 and 1,725,000 shares
     issued and outstanding as of December 31, 1997 and 1996...................          -                   -
   Common Stock, par value $0.01 per share:
     250,000,000 shares authorized, 86,663,000 and 74,710,000 shares
     issued and outstanding as of December 31, 1997 and 1996...................         0.9                 0.7
   Additional paid-in capital..................................................     1,534.9             1,137.0
   Treasury stock, ESOP and other..............................................       (30.1)              (32.2)
   Retained earnings...........................................................       259.1               193.7
   Cumulative foreign currency translation adjustment..........................       (78.2)              (58.3)
                                                                                   --------           ---------
     Total stockholders' equity................................................     1,686.6             1,240.9
                                                                                   --------           ---------
     Total liabilities and stockholders' equity................................    $5,594.7            $4,420.0
                                                                                   ========           =========

          See accompanying notes to consolidated financial statements.
</TABLE>

<TABLE>
<CAPTION>
                      ULTRAMAR DIAMOND SHAMROCK CORPORATION
                      CONSOLIDATED STATEMENTS OF OPERATIONS


                                                                 Years Ended December 31,
                                                            1997          1996          1995
                                                            ----          ----          ----
                                                          (in millions, except per share data)

<S>                                                       <C>           <C>           <C> 
Sales and other revenues (including excise taxes)         $10,882.4     $10,208.4     $8,083.5
                                                          ---------     ---------     --------
Operating costs and expenses:
   Cost of products sold...............................     6,817.5       6,550.0      4,863.1
   Operating expenses..................................       887.2         928.1        672.3
   Selling, general and administrative expenses........       317.3         302.0        254.7
   Taxes other than income taxes.......................     2,275.9       2,101.1      1,930.3
   Depreciation and amortization.......................       200.1         179.9        136.3
   Merger and integration costs........................          -           77.4           -
                                                          ----------    ----------    ---------
      Total operating costs and expenses...............    10,498.0      10,138.5      7,856.7
                                                          ----------    ----------    ---------

Operating income.......................................       384.4          69.9        226.8
  Interest income......................................        11.5          18.4         13.4
  Interest expense.....................................      (131.7)       (128.5)       (93.1)
  Gain on sale of office building......................        11.0            -            -
                                                          ----------    ----------    ---------
Income (loss) before income taxes, extraordinary
 loss, cumulative effect and dividends of subsidiary...       275.2         (40.2)       147.1
  Provision (benefit) for income taxes.................       110.2          (4.3)        52.1
  Dividends on preferred stock of subsidiary...........         5.4            -            -
                                                          ----------    ----------    ---------
Income (loss) before extraordinary loss and
 cumulative effect.....................................       159.6         (35.9)        95.0
  Extraordinary loss on debt extinguishment............        (4.8)           -            -
  Cumulative effect of accounting change...............          -             -          22.0
                                                          ----------    ----------    ---------
Net income (loss)......................................       154.8         (35.9)       117.0
  Dividends on Cumulative Convertible Preferred Stock           4.3           4.3          4.3
                                                          ----------    ----------    ---------

Net income (loss) applicable to Common Shares..........   $   150.5     $   (40.2)    $  112.7
                                                          ==========    ==========    =========
Basic income (loss) per share:
   Income (loss) before extraordinary loss and            $     1.99        $(0.54)       $1.31
     cumulative effect.................................
   Extraordinary loss on debt extinguishment...........        (0.06)          -            -
   Cumulative effect of accounting change..............          -             -           0.31
                                                          ----------    ----------    ---------
   Net income (loss)...................................   $     1.93        $(0.54)       $1.62
                                                          ==========    ==========    =========

Diluted income (loss) per share:
   Income (loss) before extraordinary loss and
     cumulative effect.................................   $     1.94        $(0.54)       $1.30
   Extraordinary loss on debt extinguishment...........        (0.06)          -            -
   Cumulative effect of accounting change..............          -             -           0.30
                                                          ----------    ----------    ---------
   Net income (loss)...................................   $     1.88        $(0.54)       $1.60
                                                          ==========    ==========    =========

Weighted average number of shares:
   Basic...............................................        78.120        74.427       69.467
   Diluted.............................................        82.424        74.427       73.333

          See accompanying notes to consolidated financial statements.
</TABLE>
<TABLE>
<CAPTION>
                      ULTRAMAR DIAMOND SHAMROCK CORPORATION
                 CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
                  Years Ended December 31, 1997, 1996 and 1995
                                  (in millions)



                                                                                                  Cumulative
                                                                       Treasury                    Foreign
                                                        Additional      Stock,                     Currency         Total
                                             Common      Paid-in       ESOP and     Retained     Translation    Stockholders'
                                             Stock       Capital        Other       Earnings      Adjustment       Equity
                                             ------     ----------     ---------    --------     -----------    -------------
<S>                                           <C>       <C>            <C>          <C>           <C>            <C>
Balance at January 1, 1995..........          $0.7      $  988.6       $(45.6)      $249.9        $(70.7)        $1,122.9

  Issuance of Common Stock..........            -          128.6          2.7         (0.6)           -             130.7
  Payment of ESOP note..............            -             -           5.8           -             -               5.8
  Net income........................            -             -            -         117.0            -             117.0
  Cash dividends....................            -             -            -         (64.6)           -             (64.6)
  Other, net........................            -            0.6        (0.4)          1.0          15.0             16.2
                                             -----      ----------     ---------    ---------     ------         --------
Balance at December 31, 1995........           0.7       1,117.8       (37.5)        302.7         (55.7)         1,328.0

  Issuance of Common Stock..........            -           16.4         1.2          (3.1)           -              14.5
  Payment of ESOP note..............            -             -          4.2            -             -               4.2
  Net loss..........................            -             -           -          (35.9)           -             (35.9)
  Cash dividends....................            -             -           -          (69.8)           -             (69.8)
  Other, net........................            -            2.8        (0.1)         (0.2)         (2.6)            (0.1)
                                             -----      --------       ---------    ------        ------         --------
Balance at December 31, 1996........           0.7       1,137.0       (32.2)        193.7         (58.3)         1,240.9

  Issuance of Common Stock..........           0.1           6.7        (0.7)           -             -               6.1
  Termination of ESOP...............            -             -          2.8            -             -               2.8
  Net income........................            -             -           -          154.8            -             154.8
  Cash dividends....................            -             -           -          (89.8)           -             (89.8)
  Acquisition of Total..............           0.1         391.2          -             -             -             391.3
  Other, net........................            -             -           -            0.4         (19.9)           (19.5)
                                             -----      --------     ----------    ---------     -------        ---------
Balance at December 31, 1997........          $0.9      $1,534.9      $(30.1)       $259.1        $(78.2)        $1,686.6
                                             =====      ========     ==========    =========     =======        =========

As of December 31, 1997,  1996 and 1995, the Company had issued and  outstanding
1,724,400  shares,  1,725,000 shares and 1,725,000 shares,  respectively,  of 5%
Cumulative Convertible Preferred Stock with a par value of less than $100,000.


          See accompanying notes to consolidated financial statements.
</TABLE>

<TABLE>
<CAPTION>
                                       ULTRAMAR DIAMOND SHAMROCK CORPORATION
                                       CONSOLIDATED STATEMENTS OF CASH FLOWS


                                                                           Years Ended December 31,
                                                                       1997          1996          1995
                                                                       ----          ----          ----
                                                                              (in millions)
<S>                                                                    <C>           <C>           <C>
Cash Flows from Operating Activities:
Net income (loss).............................................         $ 154.8       $(35.9)       $ 117.0
Adjustments to reconcile net income (loss) to
  net cash provided by operating activities:
   Depreciation and amortization..............................           200.1        179.9          136.3
   Provision for losses on receivables........................            14.9         13.6           13.8
   (Gain) loss on sale of property, plant and equipment.......           (11.4)         0.2           (1.2)
   Deferred income tax provision (benefit)....................           104.8        (45.7)          39.3
   Other, net.................................................             3.4          1.0          (19.6)
   Changes in operating assets and liabilities, net of acquisition:
     Decrease (increase) in accounts and notes receivable                 25.6       (119.9)           3.1
     Decrease (increase) in inventories.......................            46.5         31.7          (32.1)
     (Decrease) increase in accounts payable and other current
     liabilities..............................................          (221.5)       213.9           31.2
     (Decrease) increase in other long-term liabilities.......           (57.0)        20.0          (46.5)
     Other, net...............................................           (25.0)        34.8            4.2
                                                                       -------       ------        -------
       Net cash provided by operating activities..............           235.2        293.6          245.5
                                                                       -------       ------        -------
Cash Flows from Investing Activities:
  Capital expenditures........................................          (247.1)      (315.2)        (474.6)
  Acquisition of Total, net of cash acquired..................          (402.4)          -              -
  Acquisition of marketing operations.........................           (20.8)       (27.9)        (163.5)
  Deferred refinery maintenance turnaround costs..............           (25.6)       (11.5)         (12.4)
  Expenditures for investments................................           (11.9)        (5.2)          (2.7)
  Proceeds from sales of property, plant and equipment........            93.8         51.6           16.6
                                                                       -------       ------        -------
    Net cash used in investing activities.....................          (614.0)      (308.2)        (636.6)
                                                                       -------       ------        -------
Cash Flows from Financing Activities:
  Proceeds from issuance of Common Stock......................             5.5         14.0          128.0
  Net change in commercial paper and short-term borrowings..            (189.2)          -              -
  Proceeds from long-term debt borrowings.....................           415.9        578.9          790.0
  Repayment of long-term debt.................................           (68.3)      (490.5)        (375.9)
  Issuance of Company obligated preferred stock of                       200.0           -              -
subsidiary...
  Payment of cash dividends...................................           (89.8)       (69.8)         (64.6)
  Other, net..................................................            (2.2)         5.2            6.1
                                                                       -------      -------        -------
    Net cash provided by financing activities.................           271.9         37.8          483.6

Effect of exchange rate changes on cash.......................             1.0         (0.8)           0.5
                                                                       -------      -------        -------

Net (Decrease) Increase in Cash and Cash Equivalents                    (105.9)        22.4           93.0
Cash and Cash Equivalents at Beginning of Year................           197.9        175.5           82.5
                                                                       -------       ------        -------

Cash and Cash Equivalents at End of Year......................         $  92.0      $ 197.9        $ 175.5
                                                                       =======      =======        =======

          See accompanying notes to consolidated financial statements.
</TABLE>


                      ULTRAMAR DIAMOND SHAMROCK CORPORATION
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                        December 31, 1997, 1996 and 1995

NOTE 1: Summary of Significant Accounting Policies

Basis of Presentation:  Ultramar  Diamond  Shamrock  Corporation (the Company or
UDS, formerly Ultramar Corporation or Ultramar) was incorporated in the state of
Delaware in 1992 and is a leading  independent refiner and marketer of petroleum
products  (principally  transportation  fuels and heating  oil) and  convenience
store merchandise in the southwest and central regions of the United States (the
Southwest),  and the northeast United States and eastern Canada (the Northeast).
The Company owns and operates  seven  refineries  located in Texas,  California,
Michigan,  Oklahoma,  Colorado  and  Quebec,  Canada and,  markets its  products
through 2,743  Company-operated  convenience stores and 3,456 wholesale outlets.
In the  Southwest,  the Company  also stores and  markets  natural gas  liquids,
anhydrous ammonia and polymer-grade propylene at its facilities at Mont Belvieu,
Texas and, in the Northeast,  the Company sells, on a retail basis, home heating
oil to approximately 236,000 households.

Effective  December 3, 1996,  under the terms of an Agreement and Plan of Merger
dated September 22, 1996,  between Ultramar and Diamond Shamrock,  Inc. (Diamond
Shamrock),  Diamond Shamrock was merged with and into Ultramar, in a transaction
accounted for as a pooling-of-interests  (the Merger, see note 3). In connection
with  the  Merger,  Ultramar  changed  its  name to  Ultramar  Diamond  Shamrock
Corporation.

On September 25, 1997, the Company  completed its acquisition of Total Petroleum
(North America) Ltd. (Total). The purchase price included the issuance of shares
of Company  Common Stock and the  assumption of Total's  outstanding  debt.  The
acquisition has been accounted for using the purchase  method and,  accordingly,
operating  results  of Total  subsequent  to the date of  acquisition  have been
included  in  the  1997  consolidated  statement  of  operations.  Total  was an
independent  refiner and  marketer,  operating  three  refineries  in  Michigan,
Oklahoma and Colorado,  and marketing its products in the central  region of the
United States through company-owned convenience stores and wholesale outlets.

The consolidated  financial  statements  include the accounts of the Company and
its  wholly-owned  subsidiaries,  and joint ventures and partnerships in which a
controlling  interest is held.  Investments  in 50% or less owned  companies and
joint  ventures are  accounted for using the equity  method of  accounting.  All
intercompany balances and transactions are eliminated in consolidation.

Use of Estimates:  The  preparation of financial  statements in accordance  with
generally accepted  accounting  principles requires management to make estimates
and assumptions that affect the amounts  reported in the consolidated  financial
statements  and  accompanying  notes.  Actual  results  could  differ from those
estimates.  On an ongoing basis,  management  reviews its  estimates,  including
those related to litigation,  environmental liabilities,  and pensions, based on
currently available  information.  Changes in facts and circumstances may result
in revised estimates.

Cash and Cash Equivalents:  The Company considers all highly liquid  investments
with an original  maturity  of three  months or less when  purchased  to be cash
equivalents.

Inventories:  Crude oil and refined and other finished  product  inventories are
valued at the lower of cost or market (net realizable value). Cost is determined
primarily  on the  last-in,  first-out  (LIFO)  basis.  Materials,  supplies and
convenience  store  merchandise  are  valued at average  cost,  not in excess of
market value.

Property,  Plant and  Equipment:  Additions  to  property,  plant and  equipment
including  capitalized  interest are recorded at cost.  Depreciation is provided
principally by the  straight-line  method over the estimated useful lives of the
related assets. Assets recorded under capital leases and leasehold  improvements
are amortized by the straight-line  method over the shorter of the lease term or
the useful life of the related asset.

Goodwill:  The excess of cost (purchase price) over the fair value of net assets
of businesses acquired (goodwill) is being amortized by the straight-line method
over periods ranging from 10 to 30 years.

Refinery Maintenance Turnaround Costs: Refinery maintenance turnaround costs are
deferred when incurred and amortized  over the period of time estimated to lapse
until the next turnaround occurs.

Environmental Remediation Costs: Environmental remediation costs are expensed if
they  relate  to an  existing  condition  caused by past  operations  and do not
contribute  to future  revenue  generation.  Liabilities  are accrued  when site
restoration and  environmental  remediation  and cleanup  obligations are either
known  or  considered  probable  and  can  be  reasonably  estimated.  Estimated
liabilities are not discounted to present value.

Excise Taxes: Federal excise and state motor fuel taxes collected on the sale of
products and remitted to  governmental  agencies are included in sales and other
revenues and, in taxes other than income taxes.

Income Taxes:  The Company uses the asset and liability method of accounting for
income  taxes.  Under the asset and  liability  method,  deferred tax assets and
liabilities  are  recognized  for the future tax  consequences  attributable  to
differences  between the financial statement carrying amounts of existing assets
and liabilities and their  respective tax bases.  Deferred  amounts are measured
using  enacted tax rates  expected to apply to taxable  income in the year those
temporary differences are expected to be recovered or settled.

Foreign Currency Translation:  The functional currency of the Company's Canadian
operations  is the  Canadian  dollar.  The  translation  into  U.S.  dollars  is
performed  for balance  sheet  accounts  using  exchange  rates in effect at the
balance  sheet date and for  revenue  and expense  accounts  using the  weighted
average  exchange  rate  during  the  year.   Adjustments  resulting  from  such
translation are recorded as a separate component of stockholders' equity.

Stock-Based  Compensation:  The Company  accounts for  stock-based  compensation
using the intrinsic value method, in accordance with Accounting Principles Board
Opinion  (APB) No.  25.  Accordingly,  compensation  cost for stock  options  is
measured as the  excess,  if any, of the quoted  market  price of the  Company's
Common  Stock at the  date of grant  over the  amount  an  employee  must pay to
acquire the stock.

Income Per Share:  In February 1997, the Financial  Accounting  Standards  Board
(FASB)  issued  Statement  of  Financial  Accounting  Standard  (SFAS) No.  128,
"Earnings  Per  Share,"  which  establishes  new  standards  for  computing  and
presenting  earnings  per share (EPS) for  entities  with  publicly  held common
stock.  SFAS No. 128 simplifies the standards for computing EPS previously found
in APB No.  15,  "Earnings  Per  Share,"  and  makes  them  more  comparable  to
international EPS standards.  It replaces the presentation of primary EPS with a
presentation  of basic EPS, and requires dual  presentation of basic and diluted
EPS on the face of the statement of operations. The Company adopted SFAS No. 128
as of December 31, 1997,  and has restated all  prior-period  income  (loss) per
share data.

The  computation  of basic  income  (loss)  per  share is based on the  weighted
average number of common shares  outstanding during the year. Diluted income per
share is based on the  weighted  average  number  of common  shares  outstanding
during the year and, to the extent dilutive, common stock equivalents consisting
of stock  options,  stock awards  subject to  restrictions,  stock  appreciation
rights  and  convertible  preferred  stock.  Basic  income  (loss)  per share is
adjusted for dividend requirements on preferred stock.

New  Accounting  Pronouncement:  In June 1997,  the FASB  issued  SFAS No.  130,
"Reporting  Comprehensive  Income."  This  statement  establishes  standards for
reporting  and display of  comprehensive  income and its  components  (revenues,
expenses,  gains,  and  losses)  in a  full  set  of  general-purpose  financial
statements.  It requires that all items that are required to be recognized under
accounting  standards as  components  of  comprehensive  income be reported in a
financial  statement  that is  displayed  with  the  same  prominence  as  other
financial   statements  and  display  of  the   accumulated   balance  of  other
comprehensive  income separately from retained  earnings and additional  paid-in
capital in the equity section of a statement of financial position. SFAS No. 130
is   effective   for  fiscal   years   beginning   after   December   15,  1997.
Reclassification  of financial  statements for earlier periods is required.  The
Company plans to adopt SFAS No. 130 in the first quarter of 1998.

Reclassifications: Certain previously reported amounts have been reclassified to
conform to the 1997 presentation.

NOTE 2: Acquisition of Total

On September 25, 1997,  the Company  completed  its  acquisition  of Total.  The
purchase  price  included the issuance of  12,672,213  shares of Company  Common
Stock,  valued at $30.875 per share, and the assumption of approximately  $460.5
million of debt.  To finance  the  immediate  pay-off of the debt  assumed  from
Total,  the Company obtained a $150.0 million bridge loan from a group of banks,
borrowed funds under  uncommitted bank credit lines and issued commercial paper.
The  $150.0  million  bridge  loan had an  interest  rate equal to 5.92% and was
refinanced on October 14, 1997 (see note 10).

The acquisition has been accounted for using the purchase  method.  The purchase
price  has  been  allocated  based on an  estimate  of the  fair  values  of the
individual  assets and  liabilities  at the date of  acquisition.  The excess of
purchase  price over the estimate of the fair values of the net assets  acquired
was  approximately  $76.5  million  and is  being  amortized  as  goodwill  on a
straight-line basis over 25 years. A summary of the purchase price allocation is
as follows (in millions):


Working capital......................................      $ 36.1
Property, plant and equipment........................       842.6
Excess of cost over fair value of net assets of
  purchased business.................................        76.5
Other, net (includes $18.0 million of severence            (103.4)
                                                           -------
liabilities).........................................
Total purchase price.................................       851.8
     Less Company Common Stock issued................      (391.3)
                                                           -------
Debt assumed.........................................      $460.5
                                                           =======

The following  unaudited pro forma  information  presents  summary  consolidated
statements  of  operations  of the Company and Total as if the  acquisition  had
occurred as of January 1, 1997 and 1996. The pro forma amounts  include  certain
adjustments  such as  amortization  of goodwill,  additional  operating costs to
account for refinery  maintenance  turnaround  costs under the  deferral  method
versus  accrual  method,  and certain other  adjustments,  together with related
income tax effects.


                                                   Years Ended December 31,
                                                     1997             1996
                                                     ----             ----
                                            (in millions, except per share data)


Sales and other revenues........................  $ 13,179.7       $ 13,541.8
Income (loss) before extraordinary loss                165.6            (34.8)
Net income (loss)...............................       160.8            (34.8)
Net income (loss) applicable to Common Shares...       156.5            (39.1)

Net income (loss) per share:
   Basic........................................       $1.79           $(0.45)
   Diluted.......................................       1.75            (0.45)

These  unaudited pro forma results have been prepared for  comparative  purposes
only. They do not include the cost reductions or operating synergies expected to
result from the  acquisition  and therefore are not  indicative of the operating
results that would have occurred had the acquisition  been consummated as of the
above dates, nor are they indicative of future operating results.

NOTE 3: Merger of Ultramar and Diamond Shamrock

On  December  3,  1996,  Diamond  Shamrock  merged  with and into  Ultramar.  In
connection with the Merger,  the Company issued  29,876,507 shares of its Common
Stock and  1,725,000  shares  of its newly  created  5%  Cumulative  Convertible
Preferred  Stock  in  exchange  for  all the  outstanding  common  stock  and 5%
cumulative  convertible preferred stock of Diamond Shamrock. The shareholders of
Diamond  Shamrock  received  1.02  shares of UDS Common  Stock for each share of
Diamond  Shamrock  common stock and one share of UDS 5%  Cumulative  Convertible
Preferred  Stock for each share of Diamond  Shamrock 5%  cumulative  convertible
preferred  stock.  The Merger  qualified  as a tax-free  reorganization  and was
accounted for as a pooling-of-interests. Accordingly, the Company's consolidated
financial  statements  have been restated for all periods prior to the Merger to
include the results of operations, financial position and cash flows of Ultramar
and Diamond Shamrock. In addition,  all share amounts, stock option data and per
share  amounts were  adjusted to give effect to the above  exchange of UDS stock
for Diamond Shamrock stock.

The following table presents the separate  Ultramar and Diamond Shamrock amounts
for the years ended December 31, 1996 and 1995.

                                                   Years Ended December 31,

                                                      1996             1995
                                                      ----             ----

                                           (in millions, except per share data)
Sales and other revenues:
  Ultramar.......................................   $ 3,421.8         $ 2,714.4
  Diamond Shamrock...............................     4,993.7           3,703.0
  Reclassifications..............................     1,792.9           1,666.1
                                                    ----------        ---------
     Total.......................................   $10,208.4         $ 8,083.5
                                                    ==========        =========

Net (loss) income:
  Ultramar.......................................   $    48.2         $    69.7
  Diamond Shamrock...............................       (31.1)             47.3
  Merger and transaction costs, net of income
    tax benefit..................................       (53.0)               -
                                                    ----------        ----------
     Total.......................................   $   (35.9)        $   117.0
                                                    ==========        ==========

Dividends per share:
  Ultramar Common Stock..........................   $     1.10        $     1.10
  Diamond Shamrock common stock..................         0.56              0.56
  Diamond Shamrock preferred stock...............         2.50              2.50

In combining the financial information,  certain reclassifications of historical
financial  data have been made to conform  the  accounting  policies  of the two
companies.

In  connection  with the Merger,  the Company  recorded  merger and  integration
expenses of $77.4 million ($53.0  million net of income tax benefit)  during the
fourth quarter of 1996. Merger expenses of $13.1 million consist  principally of
financial and legal fees and registration costs.  Integration  expenses of $64.3
million  include  costs  to  combine  the  two  operations,  including  expenses
associated  with a workforce  reduction  of  approximately  200  employees,  the
termination  of certain  agreements,  the  writedown of certain  facilities  and
equipment and other expenses.  Integration expenses accrued at December 31, 1997
and 1996, totaled $13.5 million and $61.3 million, respectively.

NOTE 4: Acquisition of National Convenience Stores

On December 14, 1995,  Diamond  Shamrock  completed the  acquisition of National
Convenience  Stores,  Inc. (NCS). NCS operated 661 Stop N Go convenience  stores
located in Texas. The total purchase price was approximately $280.0 million. The
acquisition  was accounted for using the purchase method and,  accordingly,  the
operating  results of NCS have been included in the  consolidated  statements of
operations since the date of acquisition.  The excess of purchase price over the
fair value of the net assets  acquired was  approximately  $160.5 million and is
being amortized on a straight-line basis over 20 years.

The pro forma  financial data below for the year ended December 31, 1995,  which
combines  the  results  of  operations  of the  Company  and  NCS  prior  to the
acquisition,  are unaudited and reflect purchase price adjustments  assuming the
acquisition  had  occurred  on  January 1, 1995 (in  millions,  except per share
data).


Sales and other revenues.............................          $ 8,946.6
Net income...........................................              110.3
Net income applicable to Common Shares...............              106.0

Net income per share:
  Basic..............................................          $     1.53
  Diluted............................................                1.50

NOTE 5: Change in Accounting for Refinery Maintenance Turnaround Costs

During the second quarter of 1995, Ultramar changed its method of accounting for
refinery  maintenance  turnaround costs from an accrual method to a deferral and
amortization  method to better match revenues and expenses.  The change resulted
in a cumulative  adjustment  through December 31, 1994, of $22.0 million (net of
income taxes of $13.4 million) or $0.30 per share on a diluted  basis,  which is
included in net income for the year ended  December 31, 1995.  The effect of the
change on the year ended  December  31,  1995,  was to  increase  income  before
cumulative  effect of accounting  change by approximately  $3.5 million,  net of
income  taxes  ($0.05  per share on a  diluted  basis)  and net  income by $25.5
million ($0.35 per share on a diluted basis).

NOTE 6: Accounts and Notes Receivable

Accounts and notes receivable consisted of the following:

                                                            December 31,
                                                       1997            1996
                                                       ----            ----
                                                            (in millions)

Accounts receivable..............................     $ 654.2         $ 482.5
Notes receivable.................................         9.7            15.5
                                                      -------
  Total..........................................       663.9           498.0
Allowance for uncollectible accounts.............     (16.2)            (15.4)
Other............................................       26.2             20.5
                                                      -------
  Net accounts and notes receivable..............     $ 673.9         $ 503.1
                                                      =======         =======

NOTE 7: Inventories

Inventories consisted of the following:


                                                            December 31,
                                                       1997            1996
                                                       ----            ----
                                                           (in millions)


Crude oil and other feedstocks...................     $ 184.2         $ 309.2
Refined and other finished products..............       496.8           264.7
Materials, supplies and convenience store items          60.0            59.4
                                                      -------         -------
  Total inventories..............................     $ 741.0         $ 633.3
                                                      =======         =======

In December 1997, the Company  recorded an $11.1 million  non-cash  reduction in
the  carrying  value of crude oil  inventories  to reduce  such  inventories  to
replacement  cost which was lower  than LIFO  cost.  As of  December  31,  1996,
replacement cost exceeded the LIFO cost of inventories by $148.5 million.

NOTE 8: Property, Plant and Equipment

Property, plant and equipment, at cost, consisted of the following:


                                   Estimated              December 31,
                                  Useful Lives     1997              1996
                                  ------------     ----              ----
                                                         (in millions)

Refining......................... 15 - 30 years   $ 3,155.0         $ 2,507.2
Marketing........................  5 - 30 years     1,235.4             896.2
Petrochemicals and NGL's.........  5 - 25 years       208.5             224.9
Other............................  3 - 10 years        55.4              56.9
                                                  ---------         ---------
  Total..........................                   4,654.3           3,685.2
Accumulated depreciation and 
  amortization...................                  (1,093.3)           (954.4)
                                                   --------         ---------
  Net property, plant and equipment               $ 3,561.0          $ 2,730.8
                                                  ==========         =========

Net income for the year ended December 31, 1997 includes a pre-tax gain of $11.0
million  resulting  from the sale of an office  building in San Antonio,  Texas,
which was originally purchased to serve as the Company's corporate headquarters.
In November  1997,  the Company  entered into an agreement to sell 33.33% of its
McKee to El Paso  pipeline  and El Paso  terminal;  however,  the  Company  will
continue to operate the pipeline.

Capitalized  interest costs included in property,  plant and equipment were $2.8
million,  $8.8 million and $11.0 million for the years ended  December 31, 1997,
1996 and 1995, respectively.

NOTE 9: Other Assets

Other assets consisted of the following:
<TABLE>
<CAPTION>
                                                                        December 31,
                                                                       1997     1996
                                                                       ----     ----
                                                                          (in millions)
<S>                                                                   <C>       <C>
Goodwill and other intangibles, net of accumulated amortization
  of $24.5 million in 1997 and $12.5 million in 1996...............   $256.1    $176.2
Non-current notes receivable, net of allowances of $1.0 million 
  in 1997 and $3.4 million in 1996.................................     31.9      33.2
Refinery maintenace turnaround costs, net of accumulated 
  amortization of $36.5 million in 1997 and $19.6 million in 1996..     31.5      18.0
Other non-current assets...........................................    103.4      62.5
                                                                      ------    ------
  Net  other assets................................................   $422.9     289.9
                                                                      ======    ======
</TABLE>

NOTE 10: Notes Payable and Long-Term Debt

Notes payable and long-term debt consisted of the following:

                                                   December 31,
                                                1997         1996
                                                ----         ----
                                                   in millions)

8.25% Notes................................     $175.0       $174.9
8.625% Guaranteed Notes....................      274.4        274.3
Medium-term Notes..........................      294.8        294.8
Debentures.................................      300.0        300.0
Total Senior Notes.........................      400.0           -
Commercial Paper...........................      246.8        146.0
Money Market Lines of Credit...............       40.0        280.0
Senior Notes...............................       60.0        122.2
Mortgages..................................       41.5         44.6
Other......................................       40.4         12.7
                                               --------    --------- 
  Total debt...............................    1,872.9      1,649.5
Less current portion.......................       (6.5)        (3.2)
                                              ---------    ---------
  Long-term debt, less current portion.....   $1,866.4     $1,646.3
                                              =========    =========

On October 14, 1997, the Company  completed a public  offering of $400.0 million
of senior notes (the Total Senior Notes) to refinance  most of the debt incurred
to finance the acquisition of Total. The Total Senior Notes were issued in three
separate series.  The 7.20% Notes due October 15, 2017 (the 2017 Notes) totaling
$200.0  million,  the 6.75% Notes due October 15, 2037 (the 2037 Notes) totaling
$100.0  million,  and the 7.45%  Notes due  October  15,  2097 (the 2097  Notes)
totaling  $100.0  million.  The Total Senior Notes are unsecured and interest is
payable  semi-annually  in arrears on April 15 and October 15 of each year.  The
2017 Notes and the 2097 Notes may be  redeemed  at any time at the option of the
Company,  in whole or in part, at a redemption price equal to the greater of (a)
100% of the principal amount, or (b) the sum of the present value of outstanding
principal and interest  thereon,  discounted at the U.S.  Treasury Yield plus 20
basis points, together with accrued interest, if any, to the date of redemption.
The 2037 Notes may be redeemed,  in whole or in part,  by the holders on October
15, 2009,  at a  redemption  price equal to 100% of the  principal  plus accrued
interest. After October 15, 2009, the 2037 Notes are redeemable at the option of
the Company in the same manner as the 2017 Notes and 2097 Notes.

In 1992,  the  Company  issued the 8.25% Notes due in 1999 and  Ultramar  Credit
Corporation  (UCC), a financing  subsidiary,  issued the 8.625% Guaranteed Notes
due in 2002, in public offerings.  The 8.625% Guaranteed Notes issued by UCC are
guaranteed  by the Company and both of these Notes are unsecured and interest is
payable semi-annually.

Medium-term Notes as of December 31, 1997 and 1996,  consisted of $150.0 million
of 8.0% notes due in 2005,  $75.0  million of 9.375% notes due in 2001 and $70.0
million of notes with an average  interest rate of 7.8% and an average  maturity
of 12 years.  The  Medium-term  Notes are  unsecured  and  interest  is  payable
semi-annually.

Debentures,  originally issued by Diamond Shamrock,  as of December 31, 1997 and
1996, consisted of $100.0 million of 7.65% Debentures due in 2026, $25.0 million
of  non-callable  7.25%  Debentures due in 2010,  $75.0 million of  non-callable
8.75%  Debentures due in 2015 and $100.0 million of 8.0% Debentures due in 2023.
The Debentures are unsecured and interest is payable semi-annually.

As of December 31, 1997, the Company had available  money market lines of credit
with numerous  financial  institutions which provide the Company with additional
uncommitted capacity of $360.0 million and Cdn. $235.0 million. Borrowings under
the money market lines are typically  short-term and bear interest at prevailing
market rates as  established by the financial  institutions.  As of December 31,
1997 and 1996,  outstanding  borrowings were $40.0 million at a weighted average
interest rate of 6.12% and $280.0 million at a weighted average interest rate of
6.23%, respectively.

Borrowings under the commercial paper program,  money market lines of credit and
the Senior Notes were classified as long-term based on the Company's ability and
intent  to  refinance  these  amounts  on a  long-term  basis,  using  its  Bank
Facilities.

As of December 31, 1997, the Company's  committed bank  facilities  consisted of
(a) a U.S.  facility  under which the  Company may borrow and obtain  letters of
credit in an aggregate  amount of $700.0 million (the U.S. Bank  Facility),  and
(b) a Canadian facility under which the Company's Canadian subsidiary,  Canadian
Ultramar  Company  (CUC),  may borrow,  issue  bankers'  acceptances  and obtain
letters of credit in an aggregate  amount of Cdn.  $200.0  million (the Canadian
Bank Facility and together with the U.S. Bank  Facility,  the Bank  Facilities).
The Company must pay annual fees of 11 basis points on the total used and unused
portion of the Bank Facilities.  The interest rate under the Bank Facilities are
floating based upon the prime rate, the London  interbank  offered rate or other
floating  interest rates, at the option of the Company.  As of December 31, 1997
and 1996,  there were no borrowings drawn against the Company's Bank Facilities.
Amounts outstanding under the Bank Facilities are due in 2002, upon expiration.

The Company has a $700.0 million  commercial paper program supported by the U.S.
Bank  Facility  and as of  December  31,  1997 and  1996,  borrowings  under the
commercial   paper  program   totaled   $246.8   million  and  $146.0   million,
respectively.

The Senior  Notes,  originally  issued by Diamond  Shamrock,  as of December 31,
1997,  include 10.75% notes which require annual  installment  payments of $30.0
million through April 1999. Mortgages, originally assumed by Diamond Shamrock as
part of the NCS  acquisition,  currently  carry an annual interest rate of 9.5%,
mature in 2003 and are recorded at their net present  value of $41.5 million and
$44.6 million as of December 31, 1997 and 1996, respectively.  The Mortgages are
secured by retail properties owned by the Company.

In addition to the Bank  Facilities,  the Company has $300.0  million  available
under universal  shelf  registrations  previously  filed with the Securities and
Exchange  Commission.  Subsequent  to December  31, 1997,  the Company  filed an
amendment to the universal shelf  registration,  increasing the amount available
to $1.0  billion.  The net proceeds from any debt or equity  offering  under the
universal  shelf  registrations  would add to the Company's  working capital and
would be available for general corporate purposes.

The aggregate maturities,  after consideration of refinancing,  of notes payable
and long-term debt as of December 31, 1997 were as follows (in millions):


1998.............................................     $    6.5
1999.............................................        211.0
2000.............................................         15.1
2001.............................................         86.8
2002.............................................        564.0
Thereafter.......................................        989.5
                                                      --------
   Total notes payable and long-term debt........     $1,872.9
                                                      ========

Outstanding  letters of credit  totaled  $116.7  million and $79.4 million as of
December 31, 1997 and 1996, respectively.

The Bank  Facilities  and the  indentures  governing  the various  Notes contain
restrictive  covenants  relating  to the Company  and its  financial  condition,
operations and properties. Under these covenants, the Company and certain of its
subsidiaries are required to, among other things, maintain consolidated interest
coverage and  debt-to-total  capital  ratios.  Although these covenants have the
effect of limiting the Company's ability to pay dividends, it is not anticipated
that  such  limitations  will  affect  the  Company's  present  ability  to  pay
dividends.  As of  December  31,  1997,  under  the  most  restrictive  of these
covenants, $169.6 million was available for the payment of dividends.

In order to manage  interest  costs on its  outstanding  debt,  the  Company has
entered into various types of interest rate swap  agreements.  In 1997 and 1996,
the Company entered into interest rate swap agreements the effect of which is to
modify the interest rate characteristics of a portion of its debt, from fixed to
floating  rate.  The  differentials  paid or  received  on  interest  rate  swap
agreements are recognized as an adjustment to interest  expense.  As of December
31, 1997 and 1996, the Company had the following  interest rate swap  agreements
outstanding (in millions):

                                                         Year of Maturity
              Fixed to Floating               2002         2005        2023
                                              ----         ----        ----

Notional amount as of December 31, 1997....   $ 200.0      $ 150.0     $ 100.0
Weighted average rate received.............       6.24%        6.36%       6.93%

Notional amount as of December 31, 1996....   $ 100.0      $ 100.0          -
Weighted average rate received.............       6.19%        6.39%        -

Interest  payments totaled $125.7 million,  $122.8 million and $96.8 million for
the years ended December 31, 1997, 1996 and 1995, respectively.

NOTE 11: Company Obligated Preferred Stock of Subsidiary

On June 25, 1997, UDS Capital I (the Trust), a Delaware  business trust,  issued
$200.0 million of 8.32% perpetual Trust Originated  Preferred Securities (TOPrS)
in an underwritten  public  offering.  Distributions on the TOPrS are cumulative
and payable quarterly in arrears, at the annual rate of 8.32% of the liquidation
amount of $25.00 per TOPrS.

The TOPrS were issued by the Trust using a partnership, UDS Funding I, L.P., and
both  entities  are  wholly-owned  by the  Company.  The  Company  has fully and
unconditionally  guaranteed,  on a subordinated basis, the dividend payments due
on the TOPrS if and when  declared.  The proceeds from the issuance of the TOPrS
were used to reduce long-term debt of the Company.

NOTE 12: Stockholders' Equity

As of  December  31,  1997 and 1996,  the  Company  had issued  and  outstanding
1,724,400  shares  and  1,725,000   shares,   respectively,   of  5%  Cumulative
Convertible  Preferred  Stock (the  Preferred  Stock).  The  Preferred  Stock is
non-voting  and holders are  entitled to receive a quarterly  dividend of $0.625
per share  which  must be paid  before a dividend  can be paid on the  Company's
Common Stock.  The Preferred  Stock has a liquidation  value of $50.00 per share
(aggregate liquidation value of $86.2 million as of December 31, 1997), and each
share of  Preferred  Stock  can be  converted  into the  number of shares of the
Company's  Common Stock obtained by dividing $50.00 by the conversion price then
in effect ($25.98 as of December 31, 1997),  at any time up to and including the
redemption  date.  Until June 14, 2000, the Preferred Stock is redeemable at the
option of the Company for Common Stock,  subject to certain conditions  relating
to the market price of the Common  Stock.  After June 15, 2000, it is redeemable
for cash at the option of the Company, at a redemption price of $50.00 per share
plus any accrued and unpaid dividends. As of February 27, 1998, the market price
of the  Company's  Common Stock  exceeded the  required  threshold  allowing the
Company to convert all  outstanding  shares of  Preferred  Stock into  3,318,707
Common  Shares.  The  conversion of the  Preferred  Stock will occur in March of
1998. The  conversion has no impact on diluted income per share,  as such shares
are already included in the weighted average number of diluted shares.

In October 1995, the Company issued 5,750,000 shares of Common Stock in a public
offering at a price of $22.875  per share.  Net  proceeds  to the  Company  were
approximately $125.5 million, net of offering expenses.

The Company has adopted several Long-Term Incentive Plans (the LTIPs), which are
administered  by the  Compensation  Committee  of the  Board of  Directors  (the
Committee).  Under the terms of the LTIPs,  the Committee  may grant  restricted
stock,  stock  options,   stock  appreciation  rights,   performance  units  and
securities  awards to officers and key  employees  of the  Company.  The vesting
period for awards under the LTIPs are  established  by the Committee at the time
of grant.  Restricted  shares  awarded under the  Company's  1992 and 1996 LTIPs
generally vest on the third anniversary of the date of grant.  Restricted shares
granted under the Company's  1987 and 1990 LTIPs vest over a three-year  period.
Stock  options  may not be  granted  at less than the fair  market  value of the
Company's  Common  Stock at the date of grant and may not  expire  more than ten
years from the date of grant.  Options granted by Diamond  Shamrock prior to the
Merger  become  exercisable  40%,  30% and 30% on the  first,  second  and third
anniversaries  of the date of grant.  Under the terms of  Ultramar's  1992 LTIP,
upon the  occurrence  of a change in  control,  all  rights and  options  become
immediately vested and exercisable,  and all restricted shares immediately vest.
As a result,  upon  consummation  of the Merger,  1,152,920 stock options became
exercisable and 24,898 restricted shares vested.

Grants of restricted shares and performance units under the LTIPs for 1997, 1996
and 1995 are summarized as follows:

                                       Years Ended December 31,
                                    1997         1996            1995
                                    ----         ----            ----
Restricted shares...............     -           48,106          45,609
Performance units...............     -        2,374,356       1,727,880

The Company did not recognize  compensation expense related to performance units
during 1997; however,  during 1996 and 1995 the Company recognized  compensation
expense  related to the  performance  units of $2.9  million  and $1.6  million,
respectively.

During 1997, 1996 and 1995, the Committee granted 203,360, 3,902,675 and 975,050
stock  options,  respectively,  under the LTIPs.  Under these grants,  2,475,360
options vest 30%, 30% and 40% on the first,  second and third  anniversaries  of
the date of grant,  626,725  options vest 40%, 30% and 30% on the first,  second
and third  anniversaries of the date of grant,  and 1,979,000  options vest 100%
after 4 1/2 years,  except  that  accelerated  vesting  will occur if the market
price of the  Company's  Common Stock  reaches  prescribed  levels prior to such
time.  These stock options have terms ranging from 5 to 10 years. As of December
31, 1997, there were 7,453,349  options  available for future issuance under the
LTIPs.

Stock option transactions under the various LTIPs are summarized as follows:

                                                        Weighted Average
                                         Options         Exercise Price
                                         -------        ----------------

Outstanding January 1, 1995........      2,686,937           $20.57
  Granted..........................        975,050            24.27
  Canceled.........................        (13,914)           18.73
  Exercised........................       (204,834)           16.55
                                         ----------
Outstanding December 31, 1995......      3,443,239            21.86
  Granted..........................      3,902,675            29.82
  Canceled.........................       (275,255)           26.25
  Exercised........................       (707,526)           19.98
                                         ----------
Outstanding December 31, 1996......      6,363,133            26.76
  Granted..........................        203,360            31.33
  Canceled.........................        (41,074)           28.57
  Exercised........................       (295,288)           21.44
                                         ----------
Outstanding December 31, 1997......      6,230,131            27.15
                                         ==========

As of December 31, 1997,  1996 and 1995,  exercisable  stock options totaled 3.1
million,  2.9 million and 1.7 million  options,  respectively,  and had weighted
average exercise prices of $24.29, $23.04 and $20.33 per option, respectively.

Stock  options  outstanding  and  exercisable  as of  December  31, 1997 were as
follows:
<TABLE>
<CAPTION>
                                 Options Outstanding                             Options Exercisable
                                 -------------------                             --------------------
                                   Weighted Average
    Range of           Number       Remaining Life     Weighted Average       Number       Weighted Average
 Exercise Price     Outstanding        In Years         Exercise Price     Exercisable      Exercise Price
 --------------     -----------    ----------------    ----------------    -----------     ----------------
<S>                 <C>                  <C>              <C>               <C>                 <C>
$11.10 - $19.49       716,847            4.6              $16.68              716,847           $16.68
$20.40 - $23.53       380,928            5.0               22.35              333,418            22.18
$23.66 - $28.43     1,430,350            6.4               26.12            1,409,012            26.12
$28.56 - $33.88     3,702,006            5.4               30.08              667,889            29.63
                    ---------                                              ----------
$11.10 - $33.88     6,230,131            5.5               27.15            3,127,166            24.29
                    =========                                              ==========
</TABLE>

The Company accounts for its stock option plans using the intrinsic value method
and, accordingly,  has not recognized compensation expense for its stock options
granted.  Had the Company  accounted for stock options granted in 1997, 1996 and
1995, using the fair value method at the date of grant,  additional compensation
expense  would have been  recorded  and the pro forma  effect would have been as
follows:


                                                Years Ended December 31,
                                            1997        1996          1995
                                            ----        ----          ----
                                           (in millions, except per share data)

Pro forma net income (loss)..............   $145.3      $(44.2)       $110.8

Pro forma net income (loss) per share:
  Basic..................................     $1.86      $(0.59)        $1.60
  Diluted................................      1.76       (0.59)         1.51

The  weighted  average  fair value of  options  granted  during the years  ended
December  31,  1997,  1996 and 1995 was  $5.23,  $5.83  and  $6.54  per  option,
respectively.

For purposes of the pro forma  disclosures,  the estimated fair value of options
is amortized to expense over the options'  vesting  periods.  The fair value for
these   options  was  estimated  at  the   respective   grant  dates  using  the
Black-Scholes   option  pricing  model  with  the  following   weighted  average
assumptions:


                                          Years Ended December 31,
                                 1997               1996               1995
                                 ----               ----               ----

Expected volatility........    19% - 22%          22% - 23%          25% - 27%
Expected dividend yield....  3.96% - 4.08%      3.34% - 3.48%       2.07%- 3.48%
Expected life..............     4 years          4 - 6 years         4-6 years
Risk free interest rate....  5.83% - 6.40%      5.45% - 6.07%      6.71% - 7.72%

In January 1993, the Committee adopted the Ultramar Corporation Annual Incentive
Plan  (AIP)  which  provides  for cash and  restricted  common  stock  awards to
officers and certain key  employees of the Company.  Annual awards under the AIP
are generally based on attainment of various performance measures established by
the  Committee.  Restricted  shares awarded under the terms of the AIP generally
vest on the second  anniversary  of the date of grant. A total of 446,363 shares
remain available for issuance under the AIP.

A Performance  Incentive  Plan had been adopted by Diamond  Shamrock under which
the Committee may grant cash awards to eligible  employees.  For the years ended
1997, 1996 and 1995, the Company  expensed $13.8 million,  $4.3 million and $2.4
million, respectively, under this Plan.

Prior to the  Merger,  Diamond  Shamrock  had  established  two  Employee  Stock
Ownership Plans (ESOPs).  ESOP I was formed in June 1987, and ESOP II was formed
in April 1989.  All  employees  of Diamond  Shamrock  who had attained a minimum
length of  service  and  satisfied  other plan  requirements  were  eligible  to
participate in the ESOPs,  except that ESOP II excluded employees covered by any
collective bargaining agreements.

Prior to 1993,  Diamond  Shamrock  loaned the ESOPs  $65.8  million to  purchase
shares of the Company's  Common Stock and contributed  82,400 treasury shares of
its  Common  Stock  to ESOP I as part  of  special  award  and  success  sharing
programs.  In accordance with the success sharing  program,  the Company accrued
and expensed $1.5 million in 1995 for the purchase of 55,523 shares.  There were
no purchases of shares in 1996, and the success  sharing  program was terminated
prior to the effective date of the Merger.

The Company made contributions to the ESOPs in sufficient amounts, when combined
with dividends on the Common Stock,  to retire the principal and to pay interest
on  the  loans  used  to  fund  the  ESOPs.  Common  Shares  were  allocated  to
participants and included in the computation of income per share as the payments
of principal  and interest  were made on the loans.  Contributions  to the ESOPs
that were  charged to expense for 1997,  1996 and 1995 were $3.5  million,  $5.6
million and $7.5 million, respectively. Dividend and interest income reduced the
amounts charged to expense in 1997, 1996 and 1995, by $1.4 million, $1.7 million
and $1.5 million, respectively.

On November  14, 1997,  the Company  prepaid  $29.6  million of the 8.77% Senior
Notes which had been issued to acquire Company Common Shares for the ESOPs. As a
result of the termination of the ESOPs, prepayment of the 8.77% Senior Notes was
necessary and the Company purchased,  as treasury stock, the Common Stock of the
Company  held by the  ESOPs  which had not been  allocated  to  participants  by
November 14, 1997.  The ESOPs were  terminated  as a part of  restructuring  the
benefit  plans of the Company  pursuant to the Merger.  The Company  incurred an
extraordinary  loss of $4.8 million,  net of income tax benefit of $3.2 million,
as a result of terminating the ESOPs and prepaying the 8.77% Senior Notes.

Under the terms of the Company's Restricted Share Plan for Directors,  directors
who were not  officers  of the  Company  received  an  award  of 400  shares  of
restricted  Common Stock of the Company for each year of their term as director.
In 1996 and 1997,  the annual  award level under the plan was  increased  to 600
shares and 1,000 shares, respectively.  The directors' restricted shares vest on
the  last day of the  term  for  which  such  shares  were  awarded  or upon the
occurrence of a change in control.  As of December 31, 1996,  19,000  restricted
shares that had been awarded,  became fully vested as a result of the Merger. As
of December 31, 1997, a total of 81,000 shares are available for future issuance
under the plan.

In December 1993, the Committee adopted the Ultramar  Corporation Stock Purchase
Plan and  Dividend  Reinvestment  Plan  which  allows  eligible  holders  of the
Company's  Common Stock to use dividends to purchase Company Common Stock and to
make  optional  cash  payments to buy  additional  shares of Common  Stock.  The
Company has  reserved a total of  2,000,000  shares of Common Stock for issuance
under this plan.  As of  December  31,  1997,  a total of 6,722  shares had been
issued under the plan and 1,993,278 shares remain available for future issuance.

NOTE 13: Employee Benefit Plans

The Company has several qualified,  non-contributory  defined benefit plans (the
Qualified  Plans) covering  substantially  all of its salaried  employees in the
United  States,  other than those subject to collective  bargaining  agreements.
These plans generally provide retirement  benefits based on years of service and
compensation  during  specific  periods.   Senior  executives  and  certain  key
employees  covered by these plans are also  entitled to  participate  in various
unfunded  supplemental  executive  retirement  plans  which  provide  retirement
benefits based on years of service and compensation,  including compensation not
permitted to be taken into account under the Qualified  Plans (the  Supplemental
Plans and together with the Qualified Plans, the Pension Plans).

Under the Qualified  Plans, the Company's policy is to fund normal cost plus the
amortization  of  the  unfunded  actuarial  liability  for  costs  arising  from
qualifying  service  determined  under the  projected  unit credit  method.  The
underlying pension plan assets include cash equivalents, fixed income securities
(primarily obligations of the U.S. government) and equity securities.

The Company also maintains a retirement plan for Diamond  Shamrock's and Total's
collective  bargaining  groups (the Bargaining Unit Plans).  The Bargaining Unit
Plans generally  provide  benefits that are based on the union member's  monthly
base pay during the five years prior to retirement.

As a result of the Merger,  the Company  assumed  obligations  with respect to a
retirement plan for the former  non-employee  Directors of Diamond Shamrock (the
Directors Plan). The Directors Plan provides an annual retirement  benefit for a
period of time equal to the  shorter of (a) length of service as a  non-employee
director,   or  (b)  life  of  director.   Following  the  Merger,  the  Company
discontinued future contributions to the Directors Plan.

Benefit plan expense  related to the Company's  Pension  Plans  consisted of the
following:

                                         Years Ended December 31,
                                       1997       1996        1995
                                       ----       ----        ----
                                              (in millions)

Cost of benefits earned.........      $ 10.0      $  8.9      $  6.7
Accrued interest on projected 
  benefit obligation............        10.2         7.1         5.9
Return on plan assets...........       (16.7)       (8.4)       (9.1)
Net amortization and deferral...         7.2         2.9         4.5
                                      ------      ------      ------
  Net benefit plan expense......      $ 10.7      $ 10.5      $  8.0
                                      ======      ======      ======

A summary of the funded status of the Company's  Pension Plans  consisted of the
following:
<TABLE>
<CAPTION>
                                                                           December 31,
                                                           1997                                    1996
                                                           ----                                    ----
                                              Plans Where         Plans Where         Plans Where         Plans Where
                                            Assets Exceeded       Accumulated       Assets Exceeded       Accumulated
                                              Accumulated      Benefits Exceeded      Accumulated      Benefits Exceeded
                                                Benefits            Assets             Benefits             Assets
                                            ---------------    -----------------    ---------------    -----------------
                                                                          (in millions)
<S>                                             <C>                <C>                  <C>                <C> 
Fair market value of plan assets                $ 204.3            $ 22.7               $ 85.2             $ 2.0
                                                =======            ======               ======             =====
Actuarial present value of accumulated
  benefit obligation:
    Vested                                      $ 162.2            $ 25.6               $ 67.2             $ 2.4
    Non-vested                                      7.9               0.3                  5.1                -
                                                -------            ------               ------             -----
      Total                                       170.1              25.9                 72.3               2.4

Effect of projected future salary increases        59.1               5.7                 27.6               0.3
                                                -------            ------               ------             -----

Projected benefit obligation                    $ 229.2            $ 31.6               $ 99.9             $ 2.7
                                                =======            ======               =======            =====
Components of projected benefit obligation 
  in excess of plan assets:
    Unrecognized prior service costs            $  20.6            $ (0.2)              $  0.1             $  -
    Unrecognized net experience (gains) losses     10.8               4.8                  3.5              (0.5)
    Unrecognized net obligation                     0.3               0.1                  0.4                -
    Adjustment required to recognize
      minimum liability                              -               (2.3)                (0.4)             (0.1)
    (Prepaid) accrued pension cost                 (6.8)              6.5                 11.1               1.3
                                                -------            ------               ------             -----

                                                $  24.9            $  8.9               $ 14.7             $ 0.7
                                                =======            ======               ======             =====
</TABLE>

The  assumptions  used to measure the projected  benefit  obligations  under the
Company's  Pension  Plans as of  December  31,  1997 and 1996,  were as follows:
assumed  discount  rate of 7.25% to 7.50%  for 1997,  and  7.50%  for 1996,  and
assumed  rate for  compensation  increases of 4.0% to 4.75% for 1997 and 1996. A
weighted  average  expected  long-term rate of return on plan assets of 9.0% was
used to determine  net periodic  pension cost for each of the years in the three
years ended December 31, 1997.

The Company also maintains  several defined  contribution  retirement  plans for
substantially  all its  eligible  employees  in the United  States  and  Canada.
Contributions  to the plans are  generally  determined  as a percentage  of each
eligible  employee's salary. The aggregate costs of these plans amounted to $8.0
million, $8.0 million and $5.6 million during the years ended December 31, 1997,
1996 and 1995, respectively.

The Company sponsors unfunded defined benefit postretirement plans which provide
health care and life insurance  benefits to retirees who satisfy certain age and
service  requirements.  In  addition,  pursuant  to the terms of a  distribution
agreement between Diamond Shamrock and Maxus,  Diamond Shamrock's parent company
prior to its 1987  spin-off,  the Company  also shares in the cost of  providing
similar benefits to former employees of Maxus (see note 16).

Generally,  the  health  care  plans  pay a stated  percentage  of most  medical
expenses reduced for any deductibles,  payments made by government  programs and
other  group  coverage.  The cost of  providing  these  benefits  is shared with
retirees.

Net periodic postretirement benefit costs included the following components:

<TABLE>
<CAPTION>
                                                           Years Ended December 31,
                                                           ------------------------
                                          1997                   1996                   1995
                                          ----                   ----                   ----
                                    Health     Life       Health      Life        Health     Life
                                     Care    Insurance     Care     Insurance      Care    Insurance
                                    ------   ---------    ------    ---------     ------   --------                      
                                                              (in millions)
<S>                                  <C>       <C>         <C>        <C>         <C>        <C>

Service cost....................     $1.6      $0.3        $1.7       $0.2        $1.5       $0.1
Interest cost...................      4.6       0.7         3.9        0.6         4.0        0.4
Net amortization and deferral...     (1.2)       -         (0.7)        -         (0.7)        -
                                     -----     ----        -----      ----        -----      ----
                                     $5.0      $1.0        $4.9       $0.8        $4.8       $0.5
                                     =====     =====       =====      =====       =====      =====
</TABLE>

The  following  table  presents  the  plans'  status   reconciled  with  amounts
recognized in the Company's consolidated balance sheets:

<TABLE>
<CAPTION>
                                                                     December 31,
                                                           1997                      1996
                                                           ----                      ----
                                                    Health         Life        Health      Life
                                                     Care       Insurance       Care     Insurance
                                                    ------      ---------     ------     -----------
                                                                     (in millions)
<S>                                                 <C>         <C>           <C>        <C> 
Accumulated postretirement benefit obligation:
  Retirees                                         $ 54.7       $2.9          $32.8     $ 3.5
  Fully eligible active plan participants             6.1        0.1            2.8       0.1
  Other active plan participants                     20.5        5.4           19.5       4.2
                                                   ------      ------        ------     -----
    Total                                          $ 81.3       $8.4         $ 55.1     $ 7.8
                                                   ======      ======       =======     ======
Components of accumulated benefit obligation:
  Unrecognized prior service costs                 $(19.0)      $2.1         $ (2.8)    $(0.5)

  Unrecognized net experience (gains) losses         (9.9)      (3.3)          (4.0)      0.2

  Accrued postretirement benefit cost               110.2        9.6           61.9       8.1
                                                   -------      -----        -------    ------
    Total                                          $ 81.3       $8.4         $ 55.1     $ 7.8
                                                   =======      =====        =======    ======
</TABLE>

The principal assumptions used in the computation of net periodic postretirement
benefit cost and the accumulated  benefit  obligation were as follows:  weighted
average  assumed  discount  rate of 7.25% for 1997,  and 7.5% for 1996;  rate of
increase  in future  compensation  levels of 4.0% to 4.5% for 1997,  and 4.0% to
4.75% for 1996. The health care cost trend rate for the U.S. ranged from 6.9% to
9.0% in 1997, and was assumed to decrease  gradually to 5.0% to 6.0% by the year
2000, and remain at that level thereafter.  The rate in 1996 ranged from 7.8% to
11.5%. In Canada,  the rate was 8.0% in 1997 and 1996. The 8.0% rate was assumed
to  decrease  gradually  to 5.25% by the year 2002 and to  remain at that  level
thereafter.  Increasing the assumed weighted average health care cost trend rate
by 1% in  each  year  would  increase  the  accumulated  postretirement  benefit
obligation  under the U.S.  and  Canadian  plans as of December 31, 1997 by $4.9
million and $2.2  million,  respectively,  and the  aggregate of the service and
interest  cost  components of net periodic  postretirement  benefit cost for the
years then ended by $0.4 million and $0.2 million, respectively.

NOTE 14: Income Taxes

Income (loss) before income taxes,  extraordinary  loss and cumulative effect of
accounting change consisted of the following:
<TABLE>
<CAPTION>
                                                               Years Ended December 31,
                                                       1997               1996             1995
                                                       ----               ----             ----
                                                                      (in millions)
<S>                                                   <C>                <C>               <C>
United States....................................     $ 187.2            $ (110.7)         $   78.6
Canada...........................................        88.0                70.5              68.5
                                                      --------           ---------         --------
  Total..........................................     $ 275.2            $  (40.2)         $  147.1
                                                      ========           =========         ========

Income tax expense (benefit) consisted of the following:


                                                                Years Ended December 31,
                                                       1997               1996             1995
                                                       ----               ----             ----
                                                                     (in millions)

Current:
  U.S. Federal...................................     $  (1.0)           $   20.2          $    9.4
  U.S. State.....................................         1.8                 1.5               1.4
  Canada.........................................         4.6                19.7               2.0
                                                      -------            --------          --------
    Total current................................         5.4                41.4              12.8
                                                      -------            --------          --------
Deferred:
  U.S. Federal...................................        68.1               (43.4)             15.1
  U.S. State.....................................         6.9               (10.2)             (1.9)
  Canada.........................................        29.8                 7.9              26.1
                                                      -------            --------          --------
    Total deferred...............................       104.8               (45.7)             39.3
                                                      -------            --------          --------
Net income tax expense (benefit).................     $ 110.2            $   (4.3)         $   52.1
                                                      ========           ========          ========
</TABLE>

Deferred income taxes arise from temporary  differences between the tax basis of
assets and liabilities and their reported amounts in the consolidated  financial
statements.  The components of the Company's deferred income tax liabilities and
assets consisted of the following:
<TABLE>
<CAPTION>
                                                                                December 31,
                                                                           1997              1996
                                                                           ----              ----
                                                                               (in millions)
<S>                                                                     <C>                <C>
Deferred tax liabilities:
  Excess of book basis over tax basis of property, plant and
    equipment.....................................................      $ (510.9)          $ (327.5)
  LIFO inventory and market valuation allowance...................         (36.9)             (12.6)
  Deferred refinery maintenance turnaround costs..................         (26.3)             (20.7)
                                                                        --------           --------
    Total deferred tax liabilities................................        (574.1)            (360.8)
                                                                        --------           --------
Deferred tax assets:
  Accrued liabilities and payables................................         193.0              159.0
  U.S. Federal and State income tax credit carryforwards..........          95.9               62.2
  Canadian tax benefit on unrealized foreign exchange adjustment             5.8                6.1
  Net operating loss carryforwards................................         138.3               70.9
  Other...........................................................          12.8               10.6
                                                                        --------           ---------
    Total deferred tax assets.....................................         445.8              308.8
Less valuation allowance..........................................          (8.4)              (5.0)
                                                                        --------           ---------
    Net deferred tax liability....................................      $ (136.7)          $  (57.0)
                                                                        ========           =========
</TABLE>
As of December  31,  1997,  the Company  had U.S.  Federal and State  income tax
credit carryforwards  totaling $36.3 million which will expire in the years 1998
through 2011, alternative minimum tax (AMT) credits totaling $59.6 million which
can be carried  forward  indefinitely,  and income tax net operating  loss (NOL)
carryforwards  totaling  $349.5  million  which  will  expire in the years  2004
through  2012.  Included in the above are $180.5  million of NOL  carryforwards,
$18.7  million  of income  tax credit  carryforwards,  and $57.4  million of AMT
credits  acquired  from Total,  NCS and Diamond  Shamrock,  which are subject to
annual U.S. Federal tax limitations.

The Company has  established  a valuation  allowance  for certain  deferred  tax
assets,  primarily  NOL  carryforwards,  which  may not be  realized  in  future
periods.  The realization of net deferred tax assets recorded as of December 31,
1997, is dependent upon the Company's  ability to generate future taxable income
in both the U.S. and Canada.  Although  realization is not assured,  the Company
believes  it is more likely  than not that the net  deferred  tax assets will be
realized.

The  differences  between the Company's  effective  income tax rate and the U.S.
Federal statutory rate is reconciled as follows:
<TABLE>
<CAPTION>
                                                                Years Ended December 31,
                                                              1997        1996       1995
                                                              ----        ----       ----
                                                                      (in millions)
<S>                                                           <C>        <C>         <C>
U.S. Federal statutory rate............................       35.0%      (35.0)%     35.0%
Effect of foreign operations...........................        1.3         7.3        3.0
U.S. State income taxes, net of U.S. Federal taxes             2.1       (14.2)      (0.2)
Non-deductible reserves................................         -         11.2       (2.4)
Non-deductible merger costs............................         -         11.2         -
Goodwill amortization..................................        1.2         7.0         -
General business credits...............................         -           -        (2.5)
Other..................................................        0.4         1.8        2.5
                                                             ------      ------      -----
  Effective income tax rate............................       40.0%      (10.7)%     35.4%
                                                             ======      =======     =====
</TABLE>

Income taxes paid in the years ended December 31, 1997, 1996 and 1995,  amounted
to $16.8 million, $9.6 million and $19.0 million, respectively.

NOTE 15: Environmental Matters

The  Company's  operations  are subject to  environmental  laws and  regulations
adopted by various  governmental  authorities in the  jurisdictions in which the
Company operates.  Accordingly,  the Company has adopted policies, practices and
procedures  in the areas of  pollution  control,  product  safety,  occupational
health and the  production,  handling,  storage,  use and  disposal of hazardous
materials to prevent material  environmental  or other damage,  and to limit the
financial liability which could result from such events.  However,  some risk of
environmental or other damage is inherent in the business of the Company,  as it
is with other companies engaged in similar businesses.

The Company has been designated as a potentially  responsible  party by the U.S.
Environmental Protection Agency (the EPA) under the Comprehensive  Environmental
Response,  Compensation,  and Liability Act of 1980, and by certain states under
applicable  state laws,  with respect to the cleanup of hazardous  substances at
several sites. In each instance, other potentially responsible parties also have
been so designated. In addition, the Quebec Ministry of Environment and Montreal
Urban Community are investigating  possible instances of contamination at two of
the Company's Canadian  facilities.  The Company has agreed to remediate certain
of these sites and is currently  assessing other sites.  The Company has accrued
liabilities for environmental remediation obligations at these sites, as well as
estimated site restoration costs to be incurred in the future.

As of December 31, 1997 and 1996, accruals for environmental matters amounted to
$213.9 million  (including $79.7 million related to Total upon  acquisition) and
$151.4   million,   respectively   (included   principally  in  other  long-term
liabilities).  Charges to the  statements  of  operations  during 1997 and 1996,
totaled $1.3 million and $41.7 million,  respectively.  The 1996 charges include
$37.0  million to conform  the  accounting  policies  of  Diamond  Shamrock  and
Ultramar due to the Merger. Charges in 1995 were not significant.

The accruals  noted above  represent  the  Company's  best estimate of the costs
which will be incurred over an extended period for restoration and environmental
remediation  at  various  sites.  These  liabilities  have not been  reduced  by
possible  recoveries from third parties and projected cash expenditures have not
been discounted. Total future environmental costs cannot be reasonably estimated
due to unknown  factors  such as the  magnitude of possible  contamination,  the
timing and extent of remediation,  the determination of the Company's  liability
in proportion to other parties,  improvements  in cleanup  technologies  and the
extent to which  environmental  laws and  regulations  may change in the future.
Although  environmental  costs  may have a  significant  impact  on  results  of
operations for any single period,  the Company believes that such costs will not
have a material adverse effect on the Company's financial position.

NOTE 16: Commitments and Contingencies

The Company  leases  convenience  stores,  office  space and other  assets under
operating  leases with terms  expiring at various dates  through  2017.  Certain
leases contain renewal options and escalation clauses and require the Company to
pay property taxes,  insurance and maintenance  costs.  These provisions vary by
lease. Certain convenience store leases provide for the payment of rentals based
solely on sales  volume while others  provide for  payments,  in addition to any
established  minimums,  contingent upon the  achievement of specified  levels of
sales volumes.

Future minimum rental payments applicable to non-cancelable  operating leases as
of December 31, 1997, are as follows (in millions):

1998.............................................  $  78.1
1999.............................................     61.9
2000.............................................     53.9
2001.............................................     48.3
2002.............................................     46.0
Thereafter.......................................    149.5
                                                   -------
    Gross lease payments.........................    437.7
Less future minimum sublease rental income.......    (34.2)
                                                   -------
    Net future minimum lease payments............  $ 403.5
                                                   =======

Rental expense,  net of sublease rental income,  for all operating leases was as
follows:
<TABLE>
<CAPTION>
                                                         Years Ended December 31,
                                                       1997        1996       1995
                                                              (in millions)

<S>                                                   <C>         <C>         <C>   
Minimum rental expense...........................     $ 76.7      $ 76.7      $ 59.3
Contingent rental expense........................        7.8         6.8         6.7
                                                      ------      ------      ------
 Gross rental expense...........................       84.5         83.5        66.0
Less sublease rental income......................      (10.9)      (10.4)       (8.9)
                                                      ------      -------     ------
  Net rental expense.............................     $ 73.6      $ 73.1      $ 57.1
                                                      ======      =======     ======
</TABLE>

The Company has three long-term  operating lease arrangements (the Brazos Lease,
the Jamestown Lease and the Total Lease) to accommodate  its  convenience  store
construction  program.  The Brazos,  Jamestown and Total Leases have lease terms
which will expire in December 2003, July 2003, and August 2002, respectively. As
of December  31,  1997,  substantially  all of the $190.0  million  Brazos Lease
commitment  has been used to construct or purchase  convenience  stores and over
half of the Jamestown  and the Total Lease  commitments,  which  totaled  $165.0
million,  have been used to  construct  or  purchase  convenience  stores and to
construct the new corporate  headquarters of the Company in San Antonio,  Texas.
After their respective non-cancelable lease terms, the Brazos, the Jamestown and
the Total Leases may be extended by agreement of the parties, or the Company may
purchase  or  arrange  for  the  sale of the  convenience  stores  or  corporate
headquarters.  If the Company were unable to extend the lease or arrange for the
sale of the  properties to a third party at the respective  expiration  dates of
the Leases,  the amount necessary to purchase the properties under the Leases as
of December 31, 1997, would be approximately $277.2 million.

As of December 31, 1997, the Company had several ocean-going tankers and coastal
vessels under various non-cancelable time charters which expire on various dates
through 1998.  Certain charters include renewal options and escalation  clauses,
which vary by charter, and provide for the payment of chartering fees which vary
based on  usage.  Aggregate  future  minimum  payments  required  under the time
charters total $12.9 million for 1998.  Charges to operations for marine freight
time charters amounted to $22.1 million, $54.4 million and $54.7 million for the
years ended December 31, 1997, 1996 and 1995, respectively.

In conjunction with the construction of a high-pressure  gas oil hydrotreater at
the Company's Wilmington Refinery, the Company entered into a long-term contract
for the supply of hydrogen.  The contract  commenced in 1996 and will run for 15
years.  The purchase price for the hydrogen is fixed,  based on the quantity and
flow rate of product supplied.  The contract has a take-or-pay provision of $1.2
million per month.  In November  1996,  the Company also entered into a contract
for  the  supply  of  hydrogen  to  its  Three  Rivers  Refinery,  containing  a
take-or-pay  provision  of $0.7  million per month,  with an initial  term of 15
years.

Pursuant to the terms of various agreements, the Company has agreed to indemnify
the former owners of Ultramar, Inc. (UI) and CUC and certain of their affiliates
for any claims or liabilities  arising out of, among other things,  refining and
marketing  activities  and  litigation  related to the  operations of UI and CUC
prior to their  acquisition.  The  Company  has also  agreed  to  indemnify  two
affiliates of the former owner  against  liability  for  substantially  all U.S.
Federal,  State and local  income or  franchise  taxes in  respect of periods in
which any UI company was a member of a consolidated,  combined or unitary return
with any other member of the affiliated group.

In  connection  with the 1987 spin-off of Diamond  Shamrock from Maxus,  Diamond
Shamrock  entered  into a  distribution  agreement  which,  among other  things,
provided  for the  sharing  by the  Company  and  Maxus of  certain  liabilities
relating to businesses  Maxus  discontinued or disposed of prior to the spin-off
date. The Company's  total  liability for such shared costs was limited to $85.0
million.  The Company has fully  performed all of its obligations to Maxus under
the agreement as of December 31, 1996, including $8.3 million paid during 1996.

There are various legal proceedings and claims pending against the Company which
arise in the ordinary course of business. It is management's opinion, based upon
advice of counsel,  that these matters,  individually or in the aggregate,  will
not have a material  adverse  effect on the  Company's  results of operations or
financial condition.

NOTE 17: Financial Instruments

Financial instruments consisted of the following:

<TABLE>
<CAPTION>
                                                                   December 31,
                                                           1997                      1996
                                                           ----
                                                 Carrying     Fair       Carrying     Fair
                                                  Amount      Value       Amount      Value
                                                 --------     -----      --------     -----
                                                                   (in millions)
<S>                                              <C>          <C>        <C>          <C>

Cash and cash equivalents                        $ 92.0       $ 92.0     $ 197.9      $ 197.9
Notes receivable                                   31.9         31.9        33.2         33.2
Long-term debt, including current portion      (1,872.9)    (1,999.2)    1,649.5)    (1,717.9)
Interest rate swap agreements                      (0.4)        5.9          0.2          2.7
Commodity futures, option and price swap
  contracts                                        (0.9)      (12.0)        (1.1)        (1.1)
Foreign exchange contracts                           -           -            -            -
</TABLE>


Cash and cash equivalents as of December 31, 1997 and 1996 include $14.4 million
and $84.0 million of investments  in marketable  securities  with  maturities of
less than three months, respectively. The investments are available for sale and
are stated at cost, which approximates fair market value.

The aggregate  carrying amount of notes  receivable  approximated  fair value as
determined based on the discounted cash flow method.

The fair value of the  Company's  fixed rate debt as of  December  31,  1997 and
1996, was $1,712.4 million and $1,288.3 million,  respectively (carrying amounts
of $1,586.1 million and $1,219.9 million,  respectively) and was estimated based
on the quoted market price of similar debt instruments.  The carrying amounts of
the Company's  borrowings under its revolving credit agreements and money market
facilities  approximate  fair value  because  such  obligations  generally  bear
interest at floating rates.

The interest rate swap agreements subject the Company to market risk as interest
rates fluctuate and impact the interest  payments due on the notional amounts of
the  agreements.  The fair value of interest rate swap  agreements is determined
based on the  differences  between the  contract  rate of interest and the rates
currently quoted for agreements of similar terms and maturities.

The Company uses commodity  futures and option  contracts to manage its exposure
to  crude  oil and  petroleum  product  price  volatility  and does not use such
contracts with the intent of producing  speculative  gains.  These contracts are
marked to market value and gains and losses are recognized  currently in cost of
products  sold, as a component of the related  crude oil and  petroleum  product
purchases.  In addition,  the Company has entered  into  various  price swaps as
price  hedges  for which  gains or losses  will be  recognized  when the  hedged
transactions occur.

As of December 31, 1997, the Company had outstanding  commodity futures,  option
and price swap  contracts to purchase  $213.2  million and sell $62.7 million of
crude oil and petroleum products or to settle differences  between a fixed price
and market prices on aggregate  notional  quantities  of 8.6 million  barrels of
crude oil and  petroleum  products  which mature on various  dates  through June
2002. As of December 31, 1996, the Company had outstanding commodity futures and
option  contracts to purchase  $51.4 million and sell $22.9 million of crude oil
and petroleum products which matured on various dates through May 1997. The fair
value of  commodity  futures  and  option  contracts  is based on quoted  market
prices.  The fair value of price swap  contracts is  determined by comparing the
contract price with current broker quotes for futures contracts corresponding to
the period that the anticipated transactions are expected to occur.

The Company also periodically  enters into short-term foreign exchange contracts
to manage its exposure to exchange rate  fluctuations  on the trade  payables of
its Canadian  operations that are denominated in U.S.  dollars.  These contracts
involve the exchange of Canadian and U.S.  currency at future  dates.  Gains and
losses on these contracts  generally  offset losses and gains on the U.S. dollar
denominated trade payables.  As of December 31, 1997, the Company had short-term
foreign exchange contracts totaling $35.3 million.  As of December 31, 1996, the
Company had short-term foreign exchange  contracts  totaling $10.8 million.  The
notional  amount  of the  contracts  represents  the  extent  of  the  Company's
involvement in these  transactions but does not represent its exposure to market
risk.  The fair value of  short-term  foreign  exchange  contracts is determined
based on year-end  exchange rates. The Company  generally does not hedge for the
effects of foreign exchange rate  fluctuations on the translation of its foreign
results of operations or financial position.

The  Company is subject to the market  risk  associated  with  changes in market
price of the underlying crude oil and petroleum products; however, except in the
case of the price swaps,  such changes in values are generally offset by changes
in the sales price of the Company's petroleum  products.  The Company is exposed
to  credit  risk in the event of  nonperformance  by the  counterparties  in all
interest  rate swap  agreements,  price  swap  contracts  and  foreign  exchange
contracts. However, the Company does not anticipate nonperformance by any of the
counterparties. The amount of such exposure is generally the unrealized gains or
losses on such contracts.

Other financial instruments which potentially subject the Company to credit risk
consist  principally  of trade  receivables.  Concentration  of credit risk with
respect to trade  receivables  is limited due to the large  number of  customers
comprising the Company's  customer base and their  dispersion  across  different
geographic  areas.  As of December  31,  1997,  the  Company had no  significant
concentrations of credit risk.

NOTE 18: Business Segments and Geographic Information

The Company's revenues are principally  derived from two business segments:  (1)
Refining and Marketing and (2) Petrochemicals and NGL's.  Refining and Marketing
is engaged  in the  refining  of crude oil and  marketing  of refined  petroleum
products  and other  merchandise  in the  Southwest  region  of the  U.S.,  with
particular emphasis in Texas,  California,  Colorado,  Louisiana, New Mexico and
Oklahoma,  as well as in the  Northeast  region of the U.S. and eastern  Canada.
Petrochemicals  and NGL's  consist of  transporting,  storing and  marketing  of
natural   gas   liquids;   upgrading   refinery-grade   propylene   and  selling
polymer-grade  propylene and other  chemicals  primarily in the Texas Gulf Coast
region.

<TABLE>
<CAPTION>
                                                               Refining        Petrochemicals
                                                                 and                 and
                                                              Marketing             NGL's           Total
                                                              ---------        --------------       -----
                                                                               (in millions)
<S>                                                        <C>                    <C>            <C>
Year ended December 31, 1997
  Sales and other revenues...........................      $10,410.1              $472.3         $10,882.4
  Operating income...................................          361.1                23.3             384.4
  Depreciation and amortization......................          190.2                 9.9             200.1
  Interest expense, net..............................          112.1                 8.1             120.2
  Income before income taxes, extraordinary loss and
    dividends of subsidiary..........................          252.8                22.4             275.2
  
Year ended December 31, 1996
  Sales and other revenues...........................      $ 9,747.3              $461.1         $10,208.4
  Operating income...................................          137.8                 9.5             147.3
  Depreciation and amortization......................          166.4                13.5             179.9
  Interest expense, net..............................          101.7                 8.4             110.1
  (Loss) income before income taxes..................          (49.1)                8.9             (40.2)

Year ended December 31, 1995
  Sales and other revenues...........................      $ 7,706.1              $377.4         $ 8,083.5
  Operating income...................................          195.1                31.7             226.8
  Depreciation and amortization......................          124.9                11.4             136.3
  Interest expense, net..............................           73.7                 6.0              79.7
  Income before income taxes and cumulative effect             113.2                33.9             147.1
</TABLE>

Intersegment  sales and other revenues are generally  derived from  transactions
made at  prevailing  market  rates.  Sales  of  natural  gas  liquids  from  the
Petrochemicals  and NGL's segment to the Refining and Marketing segment amounted
to $8.6 million in 1997, $10.7 million in 1996 and $21.5 million in 1995.

Identifiable assets were as follows:
<TABLE>
<CAPTION>
                                                                    As of December 31,
                                                                    ------------------
                                                        1997               1996               1995
                                                        ----               ----               ----
                                                                      (in millions)
<S>                                                   <C>                <C>                <C> 
Refining and Marketing...........................    $ 5,230.8          $ 3,922.3           $3,839.6
Petrochemicals and NGL's.........................        226.8              240.0              188.0
Corporate........................................        137.1              257.7              189.1
                                                      --------          ---------           --------
  Consolidated Total.............................    $ 5,594.7          $ 4,420.0           $4,216.7
                                                      ========          =========           ========

Capital expenditures were as follows:


                                                                 Years Ended December 31,
                                                                 ------------------------
                                                        1997               1996               1995
                                                        ----               ----               ----
                                                                      (in millions)

Refining and Marketing...........................    $   241.4          $   314.8           $  771.5
Petrochemicals and NGL's.........................         20.5               25.4               21.2
Corporate........................................          6.0                1.8                1.5
                                                      --------          ---------           --------
  Consolidated Total.............................    $   267.9          $   342.0           $  794.2
                                                      ========          =========           ========

Identifiable  assets  are  those  assets  that are  utilized  by the  respective
business segment.  Corporate assets are principally cash,  investments and other
assets that cannot be directly associated with the operations or activities of a
business segment.

Geographic information is as follows:

                                                            As of or for the Years Ended December 31,
                                                            -----------------------------------------
                                                        1997               1996               1995
                                                        ----               ----               ----
                                                                      (in millions)
Sales and other revenues:
  Southwest......................................    $ 7,866.8          $ 7,161.6           $5,432.2
  Northeast......................................      3,015.6            3,046.8            2,651.3
                                                     ---------          ---------           --------
                                                     $10,882.4          $10,208.4           $8,083.5
                                                     =========          =========           ========
Operating income:
  Southwest......................................   $    264.9          $    69.6           $  137.8
  Northeast......................................        119.5               77.7               89.0
                                                    ----------          ---------           --------
                                                    $    384.4          $   147.3           $  226.8
                                                    ==========          =========           ========
Net income (loss):
  Southwest......................................   $     94.8          $   (68.5)          $   59.0
  Northeast......................................         60.0               32.6               58.0
                                                    ----------          ---------           --------
                                                    $    154.8          $   (35.9)          $  117.0
                                                    ==========          =========           ========
Identifiable assets:
  Southwest......................................   $  4,666.5          $ 3,377.4           $3,304.6
  Northeast......................................        928.2            1,042.6              912.1
                                                    ----------          ---------           --------
                                                    $  5,594.7          $ 4,420.0           $4,216.7
                                                    ==========         ==========           ========
Capital expenditures:
  Southwest......................................   $    178.5          $   259.1           $  770.8
  Northeast......................................         89.4               82.9               23.4
                                                    ----------          ---------           --------
                                                    $    267.9          $   342.0           $  794.2
                                                    ==========          =========           ========
Depreciation and amortization:
  Southwest......................................   $    167.7          $   153.5           $  111.4
  Northeast......................................         32.4               26.4               24.9
                                                    ----------          ---------           --------
                                                    $    200.1          $   179.9           $  136.3
                                                    ==========          =========           ========
</TABLE>

The 1996 net loss in the Southwest includes an after tax charge of $53.0 million
for transaction and integration costs associated with the Merger.

NOTE 19: Subsequent Events

On February 4, 1998,  the Board of  Directors  declared a quarterly  dividend of
$0.275  per  Common  Share  payable  on March 5,  1998,  to holders of record on
February 20,  1998.  In  addition,  the Board of Directors  declared a quarterly
dividend  of  $0.625  per  share  on the  Company's  5%  Cumulative  Convertible
Preferred  Stock payable on March 13, 1998, to holders of record on February 20,
1998.

In the first quarter of 1998, the Company and Koch  Hydrocarbon  Co., a division
of Koch Industries, Inc. and Koch Pipeline Co., an affiliate of Koch Industries,
Inc.  expect to finalize the formation of a 50-50 joint venture  related to each
entity's Mont Belvieu  petrochemical  assets.  The joint  venture  agreement and
operating  agreements  will  require  that the Company  contribute  its majority
interest in the  propane/propylene  splitters and related distribution  pipeline
and terminal,  its operating  interest in the hydrocarbon  storage  facility and
certain  of its  pipeline  and  supply  systems,  and Koch will  contribute  its
majority  interest in its Mont  Belvieu  natural gas  fractionator  facility and
certain of its pipeline and supply systems.

In January 1998,  the Company  entered into a memorandum of  understanding  with
Petro-Canada  to form a refining and marketing  joint venture to serve customers
in Canada and the northern United States more efficiently.  The venture requires
that the Company  contribute all of the assets in its Northeast  segment as well
as assets located in Michigan.  Petro-Canada will contribute all of its refining
and marketing  assets in Canada,  including  three  refineries,  a lubricant oil
manufacturing  facility and approximately  1,800 retail outlets.  Control of the
venture will be shared, with major decisions requiring approval of both parties.
Petro-Canada  will own 51% and the Company 49% of the voting  units of the joint
venture. Profits and losses will be divided between Petro-Canada and the Company
in a ratio of 64% to 36%,  respectively.  The Company  expects to  complete  the
joint venture in the summer of 1998.

NOTE 20: Quarterly Financial Information (Unaudited)
<TABLE>
<CAPTION>
                                                                             1997 Quarters
                                                                             -------------
                                                 First              Second             Third             Fourth
                                                 -----              ------             -----             ------
                                                                  (in millions, except per share data)
<S>                                              <C>               <C>                <C>                <C>
Sales and other revenues....................     $2,550.2          $2,414.4          $2,613.2          $3,304.6
Cost of products sold and operating expenses      1,859.9           1,678.0           1,818.9           2,347.9
Operating income............................         64.9             100.6             125.9              93.0
Extraordinary loss..........................           -                 -                 -               (4.8)
Net income..................................         27.6              46.3              56.6              24.3

Net income per share:
  Basic.....................................     $    0.35         $    0.60         $    0.73         $    0.27
  Diluted...................................          0.35              0.59              0.71              0.27

Weighted average number of shares (in 
thousands):
  Basic.....................................       74,725            74,799            75,724            87,122
  Diluted...................................       78,881            79,113            80,164            91,334


                                                                             1996 Quarters
                                                                             -------------
                                                 First              Second             Third             Fourth
                                                 -----              ------             -----             ------
                                                                  (in millions, except per share data)


Sales and other revenues....................     $2,369.6          $2,565.8          $2,552.8          $2,720.2
Cost of products sold and operating expenses      1,706.6           1,879.8           1,774.0           2,117.7
Operating income (loss).....................         61.6             107.6              50.3            (149.6)
Net income (loss)...........................         22.0              47.1              13.9            (118.9)

Net income (loss) per share:
  Basic.....................................     $    0.28         $    0.62         $    0.17         $   (1.61)
  Diluted...................................          0.28              0.60              0.17             (1.61)

Weighted average number of shares (in thousands):
  Basic.....................................       74,136            74,402            74,495            74,674
  Diluted...................................       78,181            78,673            78,409            74,674
</TABLE>


The  fourth  quarter of 1997  includes  Total's  results  since  acquisition  on
September  25,  1997.  Excluding  Total's  results,  sales and  other  revenues,
operating income and net income would have been $2,560.2 million,  $95.5 million
and $26.5 million, respectively.

The  results  for  the  fourth  quarter  of 1997  also  include  a $4.8  million
extraordinary  loss (net of income tax benefit of $3.2  million)  related to the
termination  of the ESOPs and the  related  prepayment  of the ESOPs'  debt.  In
December 1997, the Company recorded an $11.1 million  non-cash  reduction in the
carrying value of crude oil inventories due to the significant drop in crude oil
prices late in 1997.

The results for the fourth  quarter of 1996 include  $77.4 million of merger and
integration  costs and $50.4  million of  charges  principally  to  conform  the
accounting practices of Diamond Shamrock and Ultramar,  including the accrual of
estimated future environmental and other obligations.  In addition,  as a result
of a decision to increase certain  inventory levels during the fourth quarter of
1996, the Company recorded an additional LIFO inventory reserve of $60.7 million
as a result of higher than expected crude oil prices.

 ITEM 9.  CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING
          AND FINANCIAL DISCLOSURE

The  information  appearing  under the caption  "Ratification  of Appointment of
Independent   Accountants"  in  the  Registrant's   Proxy  Statement  is  hereby
incorporated by reference. On March 4, 1997, the Company changed its independent
accountants  from Ernst & Young LLP to Arthur  Andersen  LLP as reported on Form
8-K dated March 4, 1997. There were no disagreements on accounting principles or
financial disclosures prior to the change.

                                    PART III

ITEM 10.  DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

The  information  appearing  under  the  caption  "Election  of  Directors"  and
"Compliance  with Section 16(a) of the Exchange Act" in the  Registrant's  Proxy
Statement  relating to its 1998 Annual Meeting of Stockholders as filed with the
Securities and Exchange  Commission (the Proxy Statement) is hereby incorporated
by reference.  See also the information  appearing  under the caption  Executive
Officers of the Registrant appearing in Part I.

The Registrant is not aware of any family  relationship  between any director or
executive officer. Each officer is generally elected to hold office until his or
her successor is elected or until such officer's earlier removal or resignation.

ITEM 11.  EXECUTIVE COMPENSATION

The information appearing under the caption "Compensation of Executive Officers"
in the Registrant's Proxy Statement is hereby incorporated by reference.

ITEM 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND
          MANAGEMENT

The information appearing under the caption "Beneficial Ownership of Securities"
in the Registrant's Proxy Statement is hereby incorporated by reference.

ITEM 13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

The  information   appearing  under  the  caption  "Employment   Agreements  and
Change-in-Control   Arrangements"   and  "Indebtedness  of  Management"  in  the
Registrant's Proxy Statement is hereby incorporated by reference.

                                     PART IV

ITEM 14.  EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON
          FORM 8-K

(A)(1) and (2) -- List of financial statements and financial statement schedules

The following  consolidated  financial  statements of Ultramar  Diamond Shamrock
Corporation are included under Part II, Item 8:

     Accountants Reports
     Balance Sheets -- December 31, 1997 and 1996
     Statements of Operations  -- Years Ended  December 31, 1997,  1996 and 1995
     Statements of  Stockholders'  Equity -- Years Ended December 31, 1997, 1996
     and 1995  Statements of Cash Flows -- Years Ended  December 31, 1997,  1996
     and 1995 Notes to Consolidated Financial Statements -- Years Ended December
     31, 1997, 1996 and 1995

The following  consolidated schedule of Ultramar Diamond Shamrock Corporation is
included under Part IV, Item 14(d):

     Schedule II -- Valuation and qualifying accounts

All other  schedules are omitted because they are not applicable or the required
information  is  included  in the  consolidated  financial  statements  or notes
thereto.

(B) Reports on Form 8-K

Current Report on Form 8-K dated October 8, 1997,  relating to the  underwriting
agreement for the issuance of the $400.0 million of Total Senior Notes.

Current Report on Form 8-K dated December 15, 1997, relating to the notification
of expiration of outstanding warrants.

Current Report on Form 8-K dated March 3, 1998,  relating to the notification to
the 5% Cumulative Convertible Preferred Stock holders of the Company's intention
to redeem all such outstanding Preferred Stock on March 18, 1998.

(C) Exhibits:

Unless otherwise  indicated,  each of the following exhibits has been previously
filed with the Securities and Exchange Commission under File No. 1-11154.  Where
indicated  as being filed by Diamond  Shamrock,  Inc.,  such  filings were filed
under File No. 1-9409 unless otherwise indicated.

<TABLE>
<CAPTION>
    <S>         <C>                                                             <C> 
    Exhibit                                                                      Incorporated by Reference
    Number                          Description                                  to the Following Documents

      3.1       Certificate of Incorporation dated April 27, 1992,              Registration Statement on Form S-1 (File No.33- 
                as amended on April 28, 1992                                    47586), Exhibit 3.1

      3.2       Certificate of Merger of Diamond Shamrock, Inc.                 Registration Statement on Form S-8 (File No.333-
                with and into the Company, amending the                         19131), Exhibit 4.2
                Company's Articles of Incorporation

      3.3       Certificate of Designations of the Company's 5%                 Registration Statement on Form S-8 (File No.333-
                Cumulative Convertible Preferred Stock                          19131), Exhibit 4.3

      3.4       By-laws dated April 28, 1992                                    Registration Statement on Form S-1 (File No.33-
                                                                                47586), Exhibit 3.2

      3.5       Amendment dated July 22, 1993 to By-laws                        Annual Report on Form 10-K for the year ended
                                                                                December 31, 1995, Exhibit 3.3

      3.6       Amendment dated December 3, 1996 to By-laws                     Registration Statement on Form S-8 (File No.333-
                                                                                19131), Exhibit 4.6

      4.1       Form of Common Stock Certificate                                Registration Statement on Form S-8 (File No.333-
                                                                                19131), Exhibit 4.8

      4.2       Form of 5% Cumulative Convertible Preferred                     +
                Stock Certificate

      4.3       See Exhibit 3.1

      4.4       See Exhibit 3.2

      4.5       See Exhibit 3.3

      4.6       See Exhibit 3.4

      4.7       See Exhibit 3.5

      4.8       See Exhibit 3.6

      4.9       Form of Indenture between Diamond Shamrock,                     Registration Statement on Form S-1 of Diamond
                Inc. and the First National Bank of Chicago                     Shamrock, Inc. (File No.33-32024), Exhibit 4.1

     4.10       Form of 9 3/8% Note Due March 1, 2001                           Current Report on Form 8-K of Diamond
                                                                                Shamrock, Inc. dated February 20, 1991, Exhibit
                                                                                4.1

     4.11       Forms of Medium Term Notes, Series A                            Registration Statement on Form S-3 of Diamond
                                                                                Shamrock, Inc. (File No.33-58744), Exhibit 4.2

     4.12       Form of 8% Debenture due April 1, 2003                          Current Report on Form 8-K of Diamond
                                                                                Shamrock, Inc. dated March 22, 1993, Exhibit 4.1

     4.13       Form of 8 3/4% Debenture due June 15, 2015                      Current Report on Form 8-K of Diamond
                                                                                Shamrock, Inc. dated February 6, 1995, Exhibit 4.1

     4.14       Form of 7 1/4% Debenture due June 15, 2010                      Current Report on Form 8-K of Diamond
                                                                                Shamrock, Inc. dated June 1, 1995, Exhibit 4.1

     4.15       Form of 7.65% Debenture due July 1, 2026                        Current Report on Fom 8-K of Diamond
                                                                                Shamrock, Inc. dated June 20, 1996, Exhibit 4.1

     4.16       Rights Agreement dated June 25, 1992, between                   Registration Statement on Form S-1 (File No.33-
                Ultramar Diamond Shamrock Corporation and                       47586), Exhibit 4.2; Quarterly Report on Form 10-
                Registrar and Transfer Company (as successor                    Q for the quarter ended September 30, 1992,
                rights agent to First City Texas-Houston, NA), as               Exhibit 4.2; Annual Report on Form 10-K for the
                amended by the First Amendment dated October                    year ended December 31, 1994, Exhibit 4.3
                26, 1992 and the Amendment dated May 10, 1994

     4.17       Indenture dated July 6, 1992 between  Ultramar                  Quarterly Report on Form 10-Q for the quarter
                Diamond  Shamrock  Corporation,  as issuer,  and                ended  June 30,  1992,  Exhibit  10.5  
                First City Texas-Houston NA, as trustee, relating 
                to the 8 1/4% Notes due July 1, 1999

     4.18       Indenture dated July 6, 1992 among Ultramar                     Quarterly Report on Form  10-Q  for  the  quarter
                Credit  Corporation,  as  issuer, Ultramar  Diamond             ended June 30, 1992,  Exhibit 10.6
                Shamrock Corporation,  as guarantor,  and First 
                City Texas-Houston NA, as trustee, relating to 
                the 8 5/8% Guaranteed Notes due July 1, 2002

     4.19       Indenture dated March 15, 1994 between Ultramar                 Current Report on Form 8-K for the quarter ended
                Diamond Shamrock Corporation, as issuer, and                    June 30, 1997, Exhibit 4.3
                The Bank of New York, as trustee; Subordinated
                Debt Indenture dated June 25, 1997 between
                Ultramar Diamond Shamrock Corporation and the
                Bank of New York, as trustee

     4.20       Form of 7.20% Senior Note due October 15, 2017                  Current Report on Form 8-K dated October 8, 
                                                                                1997, Exhibit 4.1

     4.21       Form of 6.75% Senior Note due October 15, 2037                  Current Report on Form 8-K dated October 8,
                                                                                1997, Exhibit 4.2

     4.22       Form of 7.45% Senior Note due October 15, 1997                  Current Report on Form 8-K dated October 8,
                                                                                1997, Exhibit 4.3

     10.1       Lease dated April 30, 1970 between Ultramar.                    Registration Statement on Form S-1 (File No.33- 
                Inc. by assignment, and the City of Long Beach                  47586), Exhibit 10.20

     10.2       Lease dated November 27, 1992 between Ultramar                  Registration Statement on Form S-1 (File No.33-
                Canada, Inc. and the National Harbours Board                    47586), Exhibit 10.27

     10.3       Permit No. 306 dated October 1, 1975 issued by                  Registration Statement on Form S-1 (File No.33-
                the City of Los Angeles to Ultramar, Inc. by                    47586), Exhibit 10.19
                assignment

     10.4       Agreement dated April 6, 1977 between Atlantic                  Registration Statement on Form S-1 (File No.33-
                Richfield Company and Ultramar, Inc. by                         47586), Exhibit 10.22
                assignment

     10.5       Agreement for Use of Marine Terminal and                        Registration Statement on Form S-1 (File No.33-
                Pipeline dated August 30, 1978 between Ultramar,                47586), Exhibit 10.21
                Inc. by assignment, Arco Transporation Company
                and Shell Oil Company

     10.6       Warehousing Agreement dated July 1, 1984                        Registration Statement on Form S-1 (File No.33-
                between  Ultramar,  Inc., by assignment and                     47586), Exhibit 10.25
                GATX Tank Storage Terminals

     10.7       Contract re Charlottetown Terminal dated October                Registration Statement on Form S-1 (File No.33-
                1, 1990 between Ultramar Canada, Inc. and                       47586), Exhibit 10.30
                Imperial Oil (1)

     10.8       Tax Allocation Agreement dated April 30, 1992                   Registration Statement on Form S-1 (File No.33-
                between Ultramar Diamond Shamrock                               47586), Exhibit 10.2
                Corporation, LASMO plc and Ultramar America
                Limited and Guarantee of Performance and
                Indemnity to Ultramar Diamond Shamrock
                Corporation by LASMO plc, as amended by
                Amendment No. 1 dated May 22, 1992

     10.9       Reorganization Agreement dated as of July 6, 1992               Quarterly Report on Form 10-Q for the quarter
                between LASMO plc and Ultramar Diamond                          ended June 30, 1992, Exhibit 10,1
                Shamrock Corporation

     10.10      Ultramar Diamond Shamrock Corporation 1992                      Registration Statement on Form S-8 (File No.33-
                Long Term Incentive Plan dated July 21, 1992, as                52148), Exhibit 28; Annual Report on Form 10-K
                amended by the First Amendment dated January                    for the year ended December 31, 1992, Exhibit
                23, 1993, the Second Amendment dated July 21,                   10.34; Annual Report on Form 10-K for the year
                1993, the Third Amendment dated March 21, 1994                  ended December 31, 1993, Exhibit 10.46;
                and the Fourth Amendment dated February 10,                     Quarterly Report on Form 10-Q for the quarter
                1995                                                            ended March 31, 1994, Exhibit 10.47; Quarterly
                                                                                Report on Form 10-Q for the quarter eneded March
                                                                                31, 1995, Exhibit 10.50

     10.11      Ultramar Diamond Shamrock Corporation Annual                    +
                Incentive Plan for 1997

     10.12      Ultramar Diamond Shamrock Corporation                           Annual Report on Form 10-K for the year ended  
                Restricted  Share Plan for  Directors dated January             December 31, 1992, Exhibit 10.36 
                26, 1993

     10.13      Ultramar Diamond Shamrock Corporation                           Annual Report on Form 10-K for the year ended
                Supplemental Executive Retirement Plan dated                    December 31, 1995, Exhibit 10.13
                July 27, 1994

     10.14      Ultramar Diamond Shamrock Corporation U.S.                      Annual Report on Form 10-K for the year ended
                Employees Retirement Restoration Plan dated July                December 31, 1995, Exhibit 10.14
                27, 1994

     10.15      Ultramar Diamond Shamrock Corporation U.S.                      Annual Report on Form 10-K for the year ended
                Savings Incentive Restoration Plan dated July 27,               December 31, 1995, Exhibit 10.15
                1994


     10.16      Trust Agreement dated April 1985 between                        Registration Statement on Form S-1 (File No.33-
                Ultramar Canada, Inc. and Montreal Trust                        47586), Exhibit 10.1
                Company of Canada

     10.17      Employment Agreement dated as of September 22,                  Registration Statement on Form S-4 (File No.333-
                1996 between Ultramar Diamond Shamrock                          14807), Exhibit 10.1
                Corporation and Jean Gaulin

     10.18      Employment Agreement dated September 22, 1996                   Current Report on Form 8-K of Diamond
                between Ultramar Diamond Shamrock Corporation                   Shamrock, Inc. dated September 30,, 1996, Exhibit
                and Roger Hemminghaus                                           10(c)

     10.20      Form of Employment Agreement dated as of                        Annual Report on Form 10-K for the year ended
                September 22, 1996 between Diamond Shamrock,                    December 31, 1997, Exhibit
                Inc. and W. R. Klesse

     10.21      Hydrogen and Steam Supply Agreement dated                       Annual Report on Form 10-K for the year ended
                December 22, 1993 between Ultramar, Inc. and Air                December 31, 1993, Exhibit 10.43
                Products and Chemicals, Inc. (1)

     10.22      MTBE Terminaling Agreement dated March 3,                       Annual Report on Form 10-K for the year ended
                1995 between Petro-Diamond Incorporated and                     December 31, 1995
                Ultramar, Inc. (1)

     10.23      Confidential Transportation Contract dated May                  Quarterly Report on Form 10-Q for the quarter
                25, 1995 between Canadian National Railway                      ended June 30, 1995, Exhibit 10.52
                Company and Ultramar Canada, Inc. (1)

     10.24      Senior Subordinated Note Purchase Agreement                     Registration Statement on Form 10 of Diamond
                dated as of April 17, 1987 between Diamond                      Shamrock, Inc. (DS Form 10), Exhibit 10.22
                Shamrock, Inc. and certain purchasers (the Senior
                Subordinated Note Agreement)

     10.25      Amendment No.1 to the Senior Subordinated Note                  Quarterly Report on Form 10-Q of Diamond
                Agreement dated as of March 31, 1988                            Shamrock, Inc. for the quarter ended March 31,
                                                                                1988, Exhibit 19.5

     10.26      Amendment No.2 to the Senior Subordinated Note                  Quarterly Report on Form 10-Q of Diamond
                Agreement dated as of July 12, 1989                             Shamrock, Inc. for the quarter ended June 30,
                                                                                1989, Exhibit 19.2

     10.27      Amendment No.3 to the Senior Subordinated Note                  Annual Report on Form 10-K of Diamond
                Agreement dated as of December 6, 1993                          Shamrock, Inc. for the year ended December 31,
                                                                                1993, Exhibit 10.8

     10.28      Deferred Compensation Plan for executives and                   Annual Report on Form 10-K of Diamond
                directors of Diamond Shamrock, Inc. amended and                 Shamrock, Inc. for the year ended December 31,
                restated as of January 1, 1989                                  1988, Exhibit 10.13

     10.29      Supplemental Executive Retirement Plan of                       DS Form 10, Exhibit 10.16
                Diamond Shamrock, Inc. (the DS SERP)


     10.30      First Amendment to the DS SERP                                  Registration Statement on Form S-1 of Diamond
                                                                                Shamrock, Inc. (File No.33-21991) (DS S-1),
                                                                                Exhibit 10.21

     10.31      Second Amendment to the DS SERP                                 Annual Report on Form 10-K of Diamond
                                                                                Shamrock, Inc. for the year ended December 31,
                                                                                1989, Exhibit 10.21

     10.32      Excess Benefits Plan of Diamond Shamrock, Inc.                  Quarterly Report on Form 10-Q of Diamond
                                                                                Shamrock, Inc. for the quarter ended June 30,
                                                                                1987, Exhibit 19.5

     10.33      1987 Long-Term Incentive Plan of Diamond                        Registration Statement on Form S-8 of Diamond
                Shamrock, Inc.                                                  Shamrock, Inc. (File No.33-15268), Annex A-1

     10.34      Form of Disability Benefit Agreement between                    DS S-1, Exhibit 10.21
                Diamond Shamrock, Inc. and certain of its
                executive officers

     10.35      Form of Supplemental Death Benefit Agreement                    Quarterly Report on Form 10-Q of Diamond
                between Diamond Shamrock, Inc. and certain of its               Shamrock, Inc. for the quarter ended June 30,
                executive officers                                              1987, Exhibit 19.9

     10.36      Diamond Shamrock, Inc. Long-Term Incentive                      Quarterly Report on Form 10-Q of Diamond
                Plan as amended and restated as of August 15,                   Shamrock, Inc. for the quarter ended September
                1996                                                            30, 1996 (DS Form 10-Q), Exhibit 10.9

     10.37      Diamond Shamrock, Inc. Long-Term Incentive                      Quarterly Report on Form 10-Q of Diamond
                Plan as amended and restated as of May 5, 1992                  Shamrock, Inc. for the quarter ended June 30,
                                                                                1992, Exhibit 19.1

     10.38      Form of Employee Stock Purchase Loan                            Quarterly Report on Form 10-Q of Diamond
                Agreement between Diamond Shamrock, Inc. and                    Shamrock, Inc. for the quarter ended June 30,
                certain of its executive officers and employees                 1992, Exhibit 19.2
                amended and restated as of May 26, 1992

     10.39      Form of Excess benefit plan between Diamond                     Annual Report on Form 10-K of Diamond
                Shamrock, Inc. and certain officers amended and                 Shamrock, Inc. for the year ended December 31,
                restated as of December 1, 1992                                 1992 (DS 1992 10-K), Exhibit 10.49

     10.40      Form of Disability Benefit Agreement between                    DS 1992 10-K, Exhibit 10.50
                Diamond Shamrock, Inc. and certain officers
                amended and restated as of January 1, 1993

     10.41      Form of Deferred Compensation Plan between                      DS 1992 10-K, Exhibit 10.51
                Diamond Shamrock, Inc. and certain directors,
                officers and other employees amended and restated
                as of January 1, 1993

     10.42      Diamond Shamrock, Inc. Nonqualified 401(k) Plan                 Registration Statement on Form S-8 of Diamond
                                                                                Shamrock, Inc. (File No.33-64645), Exhibit 4.1


     10.43      Amendment to Diamond Shamrock, Inc.                             DS Form 10-Q
                Supplemental Executive Retirement Plan, July 22,
                1996

     10.44      Amendment to Diamond Shamrock, Inc. Disability                  DS Form 10-Q
                Benefit Agreement July 22, 1996

     10.45      Amendment to Diamond Shamrock, Inc.                             DS Form 10-Q
                Supplemental Death Benefit Agreement July 22,
                1996

     10.46      Amendment to Diamond Shamrock, Inc. Excess                      DS Form 10-Q
                Benefits Plan July 22, 1996

     10.47      Amendment to Diamond Shamrock, Inc. Long-                       DS Form 10-Q
                Term Incentive Plan July 22, 1996

     10.48      Credit Agreement dated July 23, 1997 in the                     Quarterly Report on Form 10-Q for the quarter
                amount of $700,000,000 between the Company,                     ended June 30, 1997, Exhibit 10.1
                Morgan Guaranty Trust Company of New York
                and certain other banks

     10.50      Credit Agreement dated December 19, 1996 in                     Annual Report on Form 10-K for the year ended
                the amount of CND $200,000,000  between the                     December 31, 1996, Exhibit 10.50 
                Company, Canadian Ultramar Company,  
                Canadian  Imperial  Bank of Commerce and 
                certain other banks

     10.51      Amendment No. 1 to Credit Agreement described                   Annual Report on Form 10-K for the year ended
                in Exhibit 10.50                                                December 31, 1996, Exhibit 10.51

     10.52      Amended and Restated Lease Agreement dated                      Annual Report on Form 10-K for the year ended
                December 19, 1996 among Jamestown Funding                       December 31, 1996, Exhibit 10.52
                L.P., Ultramar, Inc., Ultramar Engergy, Inc.,
                Diamond Shamrock Leasing, Inc., Diamond
                Shamrock Arizona, Inc. and Diamond Shamrock
                Refining and Marketing Company.

     10.53      Amended and Restated Ground Lease Agreement                     Annual Report on Form 10-K for the year ended
                dated December 19, 1996 between Brazos River                    December 31, 1996, Exhibit 10.53
                Leasing L.P. and Diamond Shamrock Refining and
                Marketing Company

     10.54      Amended and Restated Facilities Lease Agreement                 Annual Report on Form 10-K for the year ended
                dated December 19, 1996 between Brazos River                    December 31, 1996, Exhibit 10.54
                Leasing, L.P. and Diamond Shamrock Refining
                and Marketing Company

     10.55      Stockholder Agreement between the Company and                   Quarterly Report on Form 10-Q for the quarter
                Total                                                           ended March 31, 1997, Exhibit 10.2

     10.56      Ultramar Diamond Shamrock Corporation 1996                      Registration Statement on Form S-4 (File No. 333-
                Long-Term Incentive Plan                                        14807), Exhibit 10.2

     10.57      Relocation Agreement between the Company and                    +
                H. Pete Smith dated as of December 2, 1996

     10.58      Form First Amendment to Employment Agreement                    +
                between H. Pete Smith and the Company effective
                December 3, 1996

     10.59      Agreement  between  the  Company  and  H.  Pete                 +  
                Smith dated effective March 3, 1998, amending  
                Mr. Smith's Employment Agreement dated as of 
                November 25, 1996, and Mr. Smith's Relocation 
                Agreement dated as of December 2, 1996

     10.60      Ultramar Diamond Shamrock Corporation Non-                      Registration Statement on Form S-8 (No. 333-
                Employee Director Plan                                          27697), Exhibit 4.1

      11        Statement regarding Computation of Per Share                    +
                Earnings

     16.1       Letter of Ernst & Young LLP to the Securities and               Current Report on Form 8-K dated March 4, 1997,
                Exchange Commission regarding its concurrence                   Exhibit 16.1
                with the Company's statements contained in the
                Company's Current Report on Form 8-K

     16.2       Letter of Price Waterhouse LLP to the Securities                Current Report on Form 8-K dated March 4, 1997,
                and Exchange Commission regarding its                           Exhibit 16.2
                concurrence with the Company's statements
                contained in the Company's Current Report on
                Form 8-K

      18        Letter from Ernst & Young LLP dated August 7,                   Quarterly Report on Form 10-Q for the quarter 
                1995 regarding change in accounting                             ended June 30, 1995, Exhibit 18
                method 

      21        Subsidiaries                                                    +

     23.1       Consent of Ernst & Young LLP                                    +
     23.2       Consent of Price Waterhouse LLP                                 +
     23.3       Consent of Arthur Andersen LLP                                  +
     24.1       Power of Attorney of Officers and Directors                     +
     24.2       Power of Attorney of the Company                                +
      27        Financial Data Schedule                                         +

</TABLE>
+  Filed herewith.

(1)  Contains  material  for  which  confidential  treatement  has been  granted
pursuant to Rule 406 under the Securities  Exchange Act of 1933, as amended,  or
Rule 24b-2 under the Securities Exchange Act of 1934, as amended.  This material
has been filed separately with the Securities and Exchange Commssion pursuant to
the application for confidential treatment.

SCHEDULE II
<TABLE>
<CAPTION>
                      ULTRAMAR DIAMOND SHAMROCK CORPORATION
                        VALUATION AND QUALIFYING ACCOUNTS



                                                            Balance at        Additions        Deductions         Balance
                                                            Beginning        Charged to           from            at End
                     Description                            of Period          Expense        Accounts(1)        of Period
                     -----------                            ----------       ----------       -----------        ---------
                                                                                      (in millions)
Year Ended December 31, 1997
<S>                                                              <C>              <C>             <C>                <C> 
 Allowance for doubtful accounts and notes receivable:
  Current allowance..............................                $15.4            $17.3           $(16.5)            $16.2
  Non-current allowance..........................                  3.4             (2.4)              -                1.0
                                                                 -----            ------          -------            -----
     Total.......................................                $18.8            $14.9           $(16.5)            $17.2
                                                                 =====            ======          =======            =====   

Year Ended December 31, 1996

 Allowance for doubtful accounts and notes receivable:
  Current allowance..............................                $13.7            $13.5           $(11.8)            $15.4
  Non-current allowance..........................                  3.3              0.1               -                3.4
                                                                 -----            -----           -------            -----
     Total.......................................                $17.0            $13.6           $(11.8)            $18.8
                                                                 =====            =====           =======            =====

Year Ended December 31, 1995

 Allowance for doubtful accounts and notes receivable:
  Current allowance..............................                $11.3            $12.3          $  (9.9)            $13.7
  Non-current allowance..........................                  6.0              1.5             (4.2)              3.3
                                                                 -----            -----          --------            -----
     Total.......................................                $17.3            $13.8           $(14.1)            $17.0
                                                                 =====            =====          ========            =====

(1) Deductions represent uncollectible accounts written off, net of recoveries.
</TABLE>

                                   SIGNATURES

Pursuant to the  requirements of section 13 or 15(d) of the Securities  Exchange
Act of 1934,  the  Registrant  has duly  caused  this report to be signed on its
behalf by the undersigned thereunto duly authorized as of March 16, 1998.


                                          ULTRAMAR DIAMOND SHAMROCK CORPORATION

                                          By:  /s/ H. PETE SMITH
                                                   H. Pete Smith
                                                   Attorney-In-Fact

Pursuant to the requirements of the Securities Exchange Act of 1934, this report
has been signed as of March 16, 1998 by the following  persons in the capacities
indicated.


Signature                          Title
- ---------                          -----

/s/ Roger R. Hemminghaus *         Chief Executive Officer and Chairman of the
    Roger R. Hemminghaus           Board of Directors (Principal Executive 
                                   Officer)

/s/ Jean Gaulin *                  President, Chief Operating Officer and Vice
    Jean Gaulin                    Chairman of the Board of Directors (Principal
                                   Operating Officer)

/s/ H. Pete Smith                  Executive Vice President and Chief Financial
    H. Pete Smith                  Officer (Principal Financial and Accounting
                                   Officer)

             *
    Byron Allumbaugh               Director

             *
    E. Glenn Biggs                 Director

             *
    W. E. Bradford                 Director

             *
    H. Fredrick Christie           Director

             *
    W. H. Clark                    Director

             *
    Bob Marbut                     Director

             *
    Katherine D. Ortega            Director

             * 
    Madeleine Saint Jacques        Director

             *
    C. Barry Schaefer              Director

*  /s/ H. Pete Smith               Attorney-in-Fact
       H. Pete Smith

42

                            ULTRAMAR DIAMOND SHAMROCK
                                   CORPORATION


                                  EXHIBIT 10.11

                           1997 ANNUAL INCENTIVE PLAN

Ultramar  Diamond  Shamrock  Corporation's  Annual  Incentive  Plan  ("AIP")  is
designed to incentivize participants to enhance shareholder value.

In making  decisions  under the AIP regarding  participation  and awards,  it is
appropriate to consider the following:

         1.       providing substantial compensation incentive for AIP
                  participants to ensure their focus in carrying out the
                  Company's annual operating plans;

         2.       maintaining the  competitiveness  of the Company's  program in
                  attracting,  rewarding, and retaining executives and other key
                  employees;

         3.       the program's sensitivity to corporate financial and
                  stock market performance; and

         4.       the extent to which  participants  are building a  significant
                  ownership   stake  in  the  Company  and  thus  more   closely
                  identifying with the interests of shareholders.

Incentive  targets  will vary  according  to a  participant's  position  and the
relative impact a participant can have on total  shareholder  return ("TSR") and
earnings before interest, taxes, depreciation,  and amortization ("EBITDA"). The
payment of any awards is conditioned on the earnings and financial  condition of
the Company.

Awards  are  determined  by  reference  to TSR,  EBITDA,  and the  participant's
attainment of certain individual objectives. These performance measures are used
with an individual's  target bonus to determine a participant's total bonus, all
as described in more detail below.

I.       Criteria for Participation

Officers of the Company will  automatically  participate in the AIP.  High-level
and select  middle-level  professionals who have been nominated by the Company's
management,  based upon their potential to impact the Company's performance, may
also participate in the AIP.

The  Compensation  Committee may designate  individuals or positions as eligible
for participation in the AIP automatically from  year-to-year,  or may designate
participation annually.

II.      Target Bonus

Target  bonuses are  expressed as a percentage of a  participant's  base salary.
Performance  above or  below  target  performance  produces  an  award  which is
respectively greater or smaller than the target bonus.

The Compensation  Committee,  in its sole discretion  determines a participant's
target bonus. Target bonus percentages may be set at different levels, depending
on the participant's scope of responsibility. Generally, the higher the level of
responsibility,  the  greater  the target  bonus  percentage.  The  Compensation
Committee  may also  consider  such  factors  as the  participant's  dedication,
ingenuity,  initiative, and other contributions the participant makes toward the
Company's success.  In no event may any participant's  total annual award exceed
200% of his target bonus.

For the Chief Executive Officer ("CEO") and Chief Operating Officer ("COO"), 60%
of their bonus is  determined  by the TSR  performance  measure,  and 40% by the
EBITDA (Consolidated) performance measure.

In the case of corporate executives and other corporate participants (other than
the CEO and  COO),  40% of their  bonus  is  determined  by the TSR  performance
measure,  40% by the EBITDA  (Consolidated)  performance measure, and 20% by the
individual performance measure.

For unit managers and other unit participants,  their bonus is determined by the
TSR performance  measure for 40%, the EBITDA (Unit) performance measure for 40%,
and the individual performance measure for 20%.

The TSR, EBITDA, and individual  performance measures are calculated in terms of
percent of target awards, and reflect the Compensation Committee's assessment of
the  appropriate  award  levels  for  attaining  different  levels  of  relative
performance.  The Compensation Committee, in its sole discretion, may change the
minimum and maximum measure levels during an AIP year.

TSR  Performance  Measure.  The TSR  performance  measure  is UDS'  share  price
appreciation  plus  dividends  measured  against  the  Company's  peer  group of
refining and marketing  companies ("Peer Group").  Members of the Peer Group are
listed in Chart V.

For each calendar  quarter UDS' TSR is calculated and compared to the UDS' "Peer
Group Average TSR" for the same period (see Chart I). The  quarterly  Peer Group
TSR is first  determined by  calculating  each Peer Group member's TSR; the Peer
Group Average TSR is the simple,  equally weighted average of the individual TSR
results.

The "point spread" is the difference  between the quarterly UDS TSR and the Peer
Group Average TSR. The "point spread" is annualized and applied  against the TSR
Incentive Scale (Chart II).

The TSR  performance  measure  percentage  of  target  award  is  determined  by
averaging the quarterly target award  percentages  achieved during the AIP year.
There is no award where the annualized  quarterly  point spread is less than -10
percentage points.  There is no limitation on the quarterly percentage of target
award which can be achieved.

EBITDA Performance  Measure.  The EBITDA performance  measure is composed of two
internal EBITDA  measurements.  The first component is the actual EBITDA for the
year  compared to the target  EBITDA.  The second  measurement  compares  EBITDA
recalculated  at budget  margins to the target EBITDA.  This second  measurement
adjusts EBITDA to reflect how efficiently the business is managed independent of
industry margin variability, thereby providing an incentive to perform at a high
level  regardless of where industry margins might go during the year. The EBITDA
performance measure is determined on a full-year basis.

These  target   EBITDA   components   will  be   established   for  the  Company
("Consolidated")  and one or more operating units  ("Unit").  Early in the first
quarter each year,  the  Compensation  Committee  establishes  the target EBITDA
performance measures for the year.

The two EBITDA performance  measure components are weighted equally to determine
the total  EBITDA  performance  measure  and are  compared  against  the  EBITDA
Performance  Measure  Incentive Scale (Chart III).  Each EBITDA  component has a
separate scale for its portion of the percentage of target award.  The scale for
EBITDA at actual margins  reaches a maximum 200% of target award.  The scale for
EBITDA at budget margins has no limit.

The  calculation  of the  percentage  of target  award  achieved  for the EBITDA
performance  measure  for  any of the  Company's  Canadian  operations  will  be
calculated  in Canadian  dollars,  so as to  neutralize  currency  exchange rate
shifts during the year.

Individual  Performance  Measure.  A  participant's  individual  performance  is
compared to the achievement of pre-determined  objectives which may include, but
are not limited to, attainment of significant  objective or quantifiable  goals,
and  developmental  goals  in  such  areas  as  leadership,  communication,  and
affirmative  action.  The  percentage of target award achieved may range from 0%
(failed to achieve  objectives) to 200% (exceeded all  expectations in achieving
the  objectives).  Individual  performance  objectives  are  established  by the
employee and his manager, and progress and priorities are reviewed  periodically
during  the  year.  Establishment  of three  to five  individual  objectives  is
suggested.

An example of the calculation of a participant's award is set out in Chart IV.

III.     Annual Incentive Threshold

Payment of any award is within the Compensation  Committee's discretion.  Before
any funds become  available for the AIP, the Committee  will  generally  require
that there be sufficient EBITDA to cover the AIP "Annual  Incentive  Threshold."
The Annual Incentive  Threshold is the total of budgeted expenses for dividends,
debt  service,  current  taxation,  corporate  administration,   and  the  total
potential payout (calculated at target award level) for the AIP and all variable
pay programs for employees not  participating  in the AIP. The Annual  Incentive
Threshold is reviewed annually by the Compensation Committee.

If  sufficient  funds are not  available to pay the bonuses as  calculated,  all
awards may be pro- rated by the ratio of the actual funds  available for the AIP
to the total calculated. In its sole discretion,  the Compensation Committee may
cause the  balance  of such  prorated  awards to be paid in stock or  restricted
stock.

IV.      Bonus Adjustments

At its  discretion,  the  Compensation  Committee may adjust actual  performance
measure results for  extraordinary  events or accounting  adjustments  resulting
from   significant   asset   purchases  or  dispositions  or  other  events  not
contemplated  or otherwise  considered by the  Compensation  Committee  when the
performance measure targets were set.

V.       Bonus Payout

Awards  typically are  determined in January or February for  performance in the
preceding year. Awards are paid in cash, unless the participant has elected,  or
is required to receive, a portion of his award in restricted stock.

After a three-year  transition  period,  if (at the time of the award  payout) a
participant  does  not hold  shares  of  Company  stock  sufficient  to meet any
applicable   stock   ownership   guidelines  that  have  been  approved  by  the
Compensation Committee, the participant will receive a restricted stock award in
lieu of cash. The applicable stock ownership guidelines are set out in Chart VI.
The number of  restricted  shares is determined by dividing the dollar amount of
25% of the bonus by the  closing  share  price on the award  date (the  Canadian
dollar  exchange  rate on the  date of the  award  will  be  used  for  Canadian
participants).  All stock awards are granted pursuant to the Company's Long-Term
Incentive Plan.

Participants  may increase the  percentage  of bonus payment taken in restricted
shares.  They may  also  request  that the  Compensation  Committee  extend  the
restriction  period  beyond the minimum two years up to a maximum of five years.
In both cases  elections  and requests  must be made prior to October 1st of the
AIP year to secure tax deferral treatment on the share grant.

CHART I

                 COMPUTATION OF TOTAL SHAREHOLDER RETURN ("TSR")

1.       For each calendar quarter:

TSR is calculated at the end of each  calendar  quarter,  using the last trading
day's  closing  price for the preceding  quarter (the  beginning  price) and the
current quarter (the ending price) plus the dividend for the period.

                  Ending Price + Dividends       - 1
                  ------------------------
                       Beginning Price

For example,  UDS' TSR is calculated as follows,  assuming a beginning  price of
$32, an ending price of $33, and $.275 in dividends:

                  $33.00 + $.275    - 1 = 3.98%
                  --------------
                      $32.00

This calculation is performed for UDS and each company in its Peer Group.

UDS' TSR is compared to its Peer  Group's  average TSR to  determine  the "point
spread."  The Peer  Group's  average is  determined  by a simple (not  weighted)
average of the TSR results for the Peer Group.

The point spread is annualized by  multiplying  it by 4, and is then compared to
the Total  Shareholder  Return  Incentive  Scale  (Chart  II) to  determine  the
annualized  percentage of target award  achieved.  The  quarterly  percentage of
target award is then  determined by dividing by 4 the  annualized  percentage of
target award indicated on Chart II.

For example, the "point spread" is calculated as follows,  assuming UDS' TSR was
3.5% and its Peer Group average TSR was -1.5%:

                  3.5% -(-1.5%) = 5% percentage points

                  4 x 5% = 20% (the annualized point spread)

         Applying the 20% point spread to Chart II reflects  that 160% of target
         award  was  achieved  for the  quarter.  Since  160% is the  annualized
         percentage of target award, in this example 40% (one-fourth of 160%) is
         the quarterly percentage of target award achieved.

2. At the end of the AIP year:

The  quarterly  percentages  of target  award  achieved  during the AIP year are
averaged (totaled and divided by 4) to yield the total TSR performance measure's
percentage of target award achieved for the AIP year.

CHART II

                    TOTAL SHAREHOLDER RETURN INCENTIVE SCALE

TSR Percentage Point Spread                        % of Target Award
                                                      (annualized)

         55 to 60                                         300%
         50 to 55                                         280%
         45 to 50                                         260%
         40 to 45                                         240%
         35 to 40                                         220%
         30 to 35                                         200%
         25 to 30                                         180%
         20 to 25                                         160%
         15 to 20                                         140%
         10 to 15                                         120%
         5 to 10                                          100%
         -5 to  5                                          90%
         -10 to -5                                         75%


Note:    The  scale is  continued  on a linear  basis  above  60%,  with  each 5
         percentage point increment  equaling a 20% increment for the annualized
         percentage of target award achieved.

CHART III

                   EBITDA PERFORMANCE MEASURE INCENTIVE SCALE
                             (EBITDA As % of Budget)


Actual Margin              % of Target Award                  At Budget Margins

                                 270(1)                              115
    120                          200                                 110
    100                          130                                 100
     90                           60                                  90
     80                           25                                  85
    <80                            0                                 <85


Results between points on the scale will be interpolated.

(1)      Scale to be  continued  above 270% for EBITDA at Budget  Margins,  with
         each  percentage  point  increment  equaling  a 14%  increment  for the
         percentage of target award.

The EBITDA at budget margins scale is narrower because only expenses and volumes
can affect the outcome,  and these  parameters are very limited with  aggressive
targets, especially on the upside.

CHART IV

                        EXAMPLE OF AIP AWARD CALCULATION

Assume the following for this example:

         o         the target EBITDA is $100 million

         o         the actual EBITDA is $80 million

         o         EBITDA at budget margins is $110 million

Actual EBITDA performance is 80% ($80 million/$100 million).

EBITDA at budget margins is 110% ($110 million/$100 million).

This suggests that  performance  was above target but lower actual  margins were
responsible for failure to meet target.

For an AIP  participant  earning  $130,000 per year and a 25% target bonus,  the
award is determined as follows:

1.       The  EBITDA   performance   measure   (40%  of  total  award  for  this
         participant) portion of the bonus payout:

                  By referring to the EBITDA Performance Measure Incentive
                  Scale (Chart III):

                  o        Actual margin EBITDA results at 80% of target = 25%
                           of target award

                  o        EBITDA results at budget margins at 110% of target
                           = 200% of target award

                  EBITDA   Performance  Measure  Percentage  of  Salary  = [(25%
                           percentage  of  target  award  + 200%  percentage  of
                           target  award) / 2] X 25%  target  bonus X 40% EBITDA
                           performance measure weight = 11.25%

                  EBITDA Performance Measure Bonus Payout = 11.25% X
                  $130,000 = $14,625

2.       The TSR performance  measure (40% of total award for this  participant)
         portion of the bonus payout:

           The Company's TSR point spread (by calendar quarter):

           Quarter           Actual Point Spread             % Target
                                                              Award(1)

             1st                   +7.5%                        180%
             2nd                   -3.0%                          0%
             3rd                  + 4.0%                        140%
             4th                  + 6.0%                        160%
             Total                                              480%

(1)      Annualized  by  multiplying  the point  spread by 4 and  applying  each
         quarter's  result  against Chart II to determine the Incentive % Target
         achieved for each quarter;  these values are totaled (480%) and divided
         by 4 to  determine  the  Incentive  Target % achieved  for the AIP year
         (120%).

                  TSR Performance Measure Percentage of Salary =

                           40% TSR  performance  measure  weight x 25% of target
                           bonus x 120% percentage of target award = 12%

TSR Performance Measure Bonus Payout = 12% of $130,000 = $15,600

3.       The  Individual  performance  measure  (20% of  total  award  for  this
         participant) portion of the bonus payout:

                  Individual  Performance  Measure  Percentage  of  Salary = 
                       20% individual performance measure weight x 25% of 
                       target bonus x 110% percentage of target award = 5.5%

                  Individual Performance Measure Bonus Payout = 5.5% of
                  $130,000 = $7,150

In this  example  this  participant's  total  bonus would be $14,625 + $15,600 +
$7,150 = $37,375.

CHART V

                                   PEER GROUP

ASHLAND, INC.

COASTAL CORP.

CROWN CENTRAL PETROLEUM

GIANT INDUSTRIES INC.

HOLLY CORP.

SUN COMPANY INC.

TOSCO CORP.

TOTAL PETROLEUM OF NORTH AMERICA

USX-MARATHON GROUP

VALERO ENERGY CORP.

CHART VI

                       EMPLOYEE STOCK OWNERSHIP GUIDELINES


EMPLOYEE GROUP                                      GUIDELINE

CEO & COO                                           3 X ANNUAL BASE PAY

EXECUTIVE TEAM MEMBERS                              2 X ANNUAL BASE PAY

VICE PRESIDENTS*                                    1 X ANNUAL BASE PAY

SENIOR MANAGERS                                     1 X ANNUAL BASE PAY*



*Vice Presidents of UDS or any of its subsidiaries


o   SHARES TO BE COUNTED TOWARD OWNERSHIP:

         o     PERSONAL OR BENEFICIALLY OWNED SHARES

         o     COMPANY-SPONSORED PROGRAM SHARES (e.g. ESOP)

         o     RESTRICTED SHARES

         o     FOR SENIOR MANAGERS ONLY - THE VALUE OF VESTED STOCK
              OPTIONS WHICH EXCEED THE EXERCISE PRICE

o     3-YEAR TRANSITION PERIOD

o     CERTIFICATION REQUIRED BEFORE ANNUAL INCENTIVE PLAN BONUS PAYOUT

o    IF AFTER THE  THREE-YEAR  TRANSITION  PERIOD  BEGINNING  JANUARY 1, 1997, A
     PARTICIPANT  DOES NOT OWN  SUFFICIENT  COMPANY STOCK TO MEET THE APPLICABLE
     OWNERSHIP  GUIDELINE,  25% OF THE PARTICIPANT'S BONUS AWARD WILL BE PAID IN
     RESTRICTED SHARES.

                                  EXHIBIT 10.57

                              RELOCATION AGREEMENT


THIS  AGREEMENT  dated as of this 2nd day of  December,  1996 is  entered by and
between H. Pete Smith (the "Employee") and Ultramar Corporation (the "Company").

1.   The Employee has entered into an employment  agreement dated as of November
     25,  1996  ("Employment  Agreement")  wherein  he has  agreed to accept the
     position  of  Executive  Vice  President  and Chief  Financial  Officer and
     relocate to the Corporate Headquarters located in San Antonio, Texas.

     This  Agreement  shall   supplement  the  Employment   Agreement  with  the
     following: the Employee shall be entitled to a one time Relocation Bonus of
     $150,000 less  required  withholdings  and the  provisions  and  allowances
     provided by the Company  Relocation  Program  Guidelines For Key Executives
     dated October 1996 ("Guidelines"), a copy of which is attached and has been
     provided to the Employee.  The Relocation Bonus will be due upon relocation
     but may be  deferred  for  payment  at a later  date at the  request of the
     Employee.

2.   The Employee may, at his  election,  voluntarily  terminate his  employment
     after 18 months from  December 3, 1996 (June 3, 1998) by giving at least 90
     days'  advance  written  notice to the  Company no later than March 3, 1998
     (the "Walk Right"). If such election is not made prior to March 4, 1998 the
     Walk Right shall thereafter terminate. In the event Employee exercises such
     "Walk Right" the Employee  shall receive the following  payments in lieu of
     the  payments  specified  in  paragraph 5 of the  Employment  Agreement.  A
     termination  during any period other than as specifically  described herein
     shall  be  treated  strictly  in  accordance  with  the  provisions  of the
     Employment  Agreement in effect at the time of termination and all payments
     due shall be only in accordance with the Employee
     Agreement.

     (a) The amount of  severance to be paid in a single lump sum within 30 days
         of the  termination  date shall be amount  payable under the Employment
         Agreement plus the present value of the benefit  accrued through to the
         termination date in the supplemental Executive Retirement Plan ("SERP")
         as applied for a termination for Good Reason, reduced by the Relocation
         bonus in paragraph 1.

     (b) Employee will be relocated at his request anywhere in the contiguous 48
         states  in  accordance  with  the  reimbursements,  allowances  and tax
         protection  as described in the  Guidelines.  However,  the  Relocation
         Allowance under item 12 of the Guidelines shall not be applicable.

3.   In the event of the  Employee's  Involuntary  Termination as defined in the
     Employment  Agreement  for a reason  other than cause  during the five year
     period   commencing   December  3,  1996,   including  death  or  permanent
     disability,  in addition to all other rights of the Employee the  following
     provisions will apply:

     (a) At the  Employee's  election in writing or the spouse's in the event of
         death, if made within one year of the event,  the Company will relocate
         the  Employee  and his  family  to  their  original  location  or other
         location of  Employee's  choosing  within the  contiguous  48 states in
         accordance  with the  reimbursements,  allowances and tax protection as
         describe in the Guidelines.

     (b) For this purpose,  however,  the Relocation Allowance described in item
         12 of the Guidelines shall not be applicable.

4.   The Employee  currently has a home loan dated August 1992 (the "Loan") with
     a current balance due and owing of $247,500. The Employee shall be entitled
     to carry  forward the Loan with  repayment  on the original  Loan  schedule
     (copy  attached)  provided  that the new mortgage on the San Antonio  house
     plus the Company Loan amount does not exceed 90% of the new house  purchase
     price.

5.   This  Agreement  shall be governed by and construed in accordance  with the
     laws of the  State of  Delaware  applicable  to  agreements  made and to be
     performed in that State.

6.   This Agreement shall supersede any and all existing  agreements written and
     oral  between  the  Employee  and  the  Employer  or any of its  affiliates
     relating to the Employee's  reimbursement and allowance for relocation.  It
     may not be  amended  except  by a  written  agreement  signed  by and  both
     parties.

7.   This  Agreement  shall  inure to the  benefit  of and be  binding  upon the
     parties hereto and their respective heirs, representatives,  successors and
     assigns.  The Agreement shall not be assignable by the Employee,  and shall
     be  assignable  by the  Company  only to any  corporation  or other  entity
     resulting from the  reorganization,  merger or consolidation of the Company
     with any other  corporation  or entity or any  corporation  or entity to or
     with which the Company's  business or substantially  all of its business or
     assets may be sold, exchanged or transferred, and it must be so assigned by
     the Company to, and accepted as binding upon it by, such other  corporation
     or   entity   in   connection   with  any  such   reorganization,   merger,
     consolidation,  sale, exchange or transfer (the provisions of this sentence
     also being applicable to any successive such transaction).

AGREED:


/s/ H. PETE SMITH                                      /S/ JEAN GAULIN
- -----------------                                      ---------------------
     Employee                                                Employer


14

                                  EXHIBIT 10.58

                     FIRST AMENDMENT TO EMPLOYMENT AGREEMENT


H. Pete Smith (the  "Executive") and Ultramar Diamond  Shamrock  Corporation,  a
Delaware  corporation (the "Company")  hereby enter into this First Amendment to
the  Employment  Agreement  between the Executive  and the Company,  dated as of
November  25,  1996 and  effective  as of  December  3,  1996  (the  "Employment
Agreement").

WHEREAS, the Executive serves as Chief Financial Officer of the Company; and

WHEREAS,  the Executive and the Company entered into the Employment Agreement as
of the date stated above; and

WHEREAS,  Section  12.8  of the  Employment  Agreement  provides  that it may be
amended only by an instrument  in writing  approved by the Company and signed by
the Executive and the Company; and

WHEREAS,  to encourage the Executive to relocate from  Connecticut to Texas, the
Executive and the Company desire to amend the Employment  Agreement as described
below, and the Company has obtained all necessary approvals of such amendment.

NOW, THEREFORE,  in consideration of the promises and mutual covenants contained
herein and in the  Employment  Agreement,  it is agreed  that,  effective  as of
December  3, 1996  (being the  "Effective  Date," as  defined in the  Employment
Agreement),  a new  paragraph  is  added  to the end of  Section  5.5 (I) of the
Employment Agreement, to read as follows:

     "In addition,  if the Executive is involuntarily  terminated by the Company
     without Cause  (including for this purpose the termination by the Executive
     of his employment with Good Reason other than pursuant to clause (g) or (h)
     of Section  5.4 (I)),  or there  occurs a change in control  entitling  the
     Executive to an immediate  payout of his entire  benefit under the Ultramar
     Corporation  Supplemental  Executive Retirement Plan (the "Ultramar SERP"),
     the Company will pay to the Executive, within thirty days after such event,
     the excess, if any, of:

(a)  the lump sum  payment to which the  Executive  would be  entitled  upon the
     occurrence  of such  event  under the  Diamond  Shamrock  R&M  Supplemental
     Executive  Retirement  Plan (as in effect on the Effective Date, but taking
     into account any  subsequent  amendments  thereto which do not decrease the
     amount of benefits or the right to receive benefits) (the "Diamond Shamrock
     SERP") if the Executive had participated  therein  immediately prior to and
     at all times  following the Effective Date, but after  substituting  "fifty
     percent  (50%)"  for  "sixty  percent  (60%)"  in  Section 6 (a) (I) of the
     Diamond Shamrock SERP; over

     (b) the lump sum payment  actually made to the Executive under the Ultramar
         SERP;

     provided  that  if,  at the  time a lump  sum  payment  becomes  due to the
     Executive under the Ultramar SERP under the circumstances described in this
     paragraph,  a lump sum payment  would not  otherwise  be due the  Executive
     under the Diamond Shamrock SERP if he participated  therein.  In that event
     an actuarial firm which generally  performs  services for the Company shall
     translate the accrued Diamond Shamrock SERP benefit at such time (as if the
     Executive  participated  therein) into an actuarially  equivalent  lump sum
     benefit,  using  actuarial  assumptions  then applicable to the Executive's
     benefit under the Ultramar SERP."

IN WITNESS  WHEREOF,  the parties have executed this First Amendment on the date
indicated below, but effective as of the date described above.

AGREED:


/s/ H. PETE SMITH
    H. Pete Smith



ULTRAMAR DIAMOND SHAMROCK CORPORATION


By: /S/ ROGER R. HEMMINGHAUS
        Roger R. Hemminghaus
        Chief Executive Officer


16

                                  EXHIBIT 10.59

                                    AGREEMENT

This  Agreement  is entered into and  effective as of March 3, 1998,  between H.
Pete  Smith  ("Executive")  and  Ultramar  Diamond  Shamrock   Corporation  (the
"Company").

Executive and the Company are parties to an Employment  Agreement dated November
25, 1996, as amended (the "Employment Agreement"), and to a Relocation Agreement
dated December 2, 1996 (the "Relocation Agreement").

In  consideration  of  the  promises  and  mutual  benefits  contained  in  this
Agreement, Executive and the Company amend said agreements as follows:

1.   The first and second  sentences of paragraph 2 of the Relocation  Agreement
     are amended and restated as follows:

     "The Employee may, at his election, voluntarily terminate his employment on
     June 1, 2000 (the "Walk Right") by giving  written notice to the Company on
     or before March 1, 2000. If such election is not received by the Company on
     or before  March 1,  2000,  the Walk  Right  shall  terminate  and be of no
     further force and effect."

2.   The fourth  sentence of paragraph 2 of the Relocation  Agreement is amended
     and restated as follows:

     "A termination  from  employment on any date other than June 1, 2000 and by
     means other than the written notice as specified in this agreement shall be
     covered  by the  Employment  Agreement,  and  any  payments  due  shall  be
     determined in accordance with the Employment Agreement."

3.   The first  sentence of  subparagraph  (a) of paragraph 2 of the  Relocation
     Agreement is amended and restated as follows:

     "(a)  Regardless of anything to the contrary in the  Employment  Agreement,
     the amount of  severance  to be paid in a single lump sum on or before June
     30, 2000 shall be  $1,498,200.00.  Executive  will also be paid the present
     value of the  benefit  accrued  through  said  termination  date  under the
     Ultramar  Corporation  Supplemental  Retirement  Benefit  Plan (the "SERP")
     applied in accordance  with Sections 5.4 (I) and 5.5 (I) of the  Employment
     Agreement for a termination with Good Reason."

4.   Subparagraph (a) to the last paragraph of Section 5.5 (I) of the Employment
     Agreement, as amended, is amended and restated as follows.

    "(a) the lump sum payment to which the Executive would be entitled upon the
     occurrence  of such event  under the  Diamond  Shamrock R & M  Supplemental
     Retirement  Plan (as in effect on the  Effective  Date),  but  taking  into
     account any subsequent  amendments thereto which do not decrease the amount
     of benefits or the right to receive benefits) (the "Diamond Shamrock SERP")
     if the Executive had participated  therein  immediately prior to and at all
     times following the Effective Date; over".

Said amendments are effective as of March 3, 1998.



/s/ H. PETE SMITH
    H. PETE SMITH



ULTRAMAR DIAMOND SHAMROCK CORPORATION


By: /s/ ROGER R. HEMMINGHAUS
        ROGER R. HEMMINGHAUS
        CHIEF EXECUTIVE OFFICER


<TABLE>
<CAPTION>
       Exhibit 11 - Statement Regarding Computation of Earnings Per Share

                                                                                 Years Ended December 31,
                                                                                 ------------------------
                                                                                1997           1996            1995
                                                                                ----           ----            ----
                                                                           (in millions, except per share data)
Basic Income (Loss) Per Share:
<S>                                                                            <C>            <C>              <C>
Weighted average common shares outstanding (in thousands)                       78,120         74,427          69,467
                                                                                ======         ======          ======

Income (loss) before extraordinary loss and cumulative effect                  $ 159.6        $(35.9)          $ 95.0
Dividends on 5% Cumulative Convertible Preferred Stock............               (4.3)          (4.3)           (4.3)
                                                                               -------        -------          ------
Income (loss) applicable to Common Shares.........................               155.3         (40.2)            90.7
Extraordinary loss on debt extinguishment.........................               (4.8)              -               -
Cumulative effect of accounting change............................                   -              -            22.0
                                                                               -------       --------          ------
   Net income (loss) applicable to Common Shares..................             $ 150.5        $(40.2)          $112.7
                                                                               =======        =======          ======

                           Per Share Amounts
Income (loss) before extraordinary loss and cumulative effect                   $ 1.99        $(0.54)          $ 1.31
Extraordinary loss on debt extinguishment.........................              (0.06)              -               -
Cumulative effect of accounting change............................                   -              -            0.31
                                                                               -------        -------          ------
   Net income (loss)..............................................              $ 1.93        $(0.54)          $ 1.62
                                                                                ======        =======          ======

Diluted Income (Loss) Per Share:

Weighted average common shares outstanding (in thousands)                       78,120         74,427          69,467
Net effect of dilutive stock options - based on the
   treasury stock method using the average market price...........                 985              -             546
Assumed conversion of 5% Cumulative Convertible Preferred
  Stock...........................................................               3,319              -           3,320
                                                                                ------        -------          ------
   Weighted average common equivalent shares......................              82,424         74,427          73,333
                                                                                ======         ======          ======

Income (loss) before extraordinary loss and cumulative effect                  $ 159.6        $(35.9)          $ 95.0
Dividends on cumulative convertible preferred stock...............                   -          (4.3)               -
                                                                               -------        -------          ------
Income (loss) applicable to Common Shares.........................               159.6         (40.2)            95.0
Extraordinary loss on debt extinguishment.........................               (4.8)              -               -
Cumulative effect of accounting change............................                   -              -            22.0
                                                                               -------        -------          ------
   Net income (loss) applicable to common equivalent shares.......             $ 154.8        $(40.2)          $117.0
                                                                               =======        =======          ======

                           Per Share Amounts
Income (loss) before extraordinary loss and cumulative effect                   $ 1.94        $(0.54)          $ 1.30
Extraordinary loss on debt extinguishment.........................              (0.06)              -               -
Cumulative effect of accounting change............................                   -              -            0.30
                                                                               -------        -------          ------
   Net income (loss)..............................................              $ 1.88        $(0.54)          $ 1.60
                                                                                ======        =======          ======
</TABLE>

19

                                   EXHIBIT 21

                      ULTRAMAR DIAMOND SHAMROCK CORPORATION
                                  SUBSIDIARIES


SUBSIDIARY                                       STATE OF INCORPORATION

3007152 Nova Scotia Company                              Canada
3070336 Canada Inc.                                      Canada
585043 Ontario Limited                                   Canada
Arkansas Central, Inc.                                   Arkansas
Arkansas LR, Inc.                                        Arkansas
Arkansas NE, Inc.                                        Arkansas
Arkansas NW, Inc.                                        Arkansas
Arkansas SE, Inc.                                        Arkansas
Arkansas SW, Inc.                                        Arkansas
Autotronic Systems, Inc.                                 Delaware
Barinco Insurance Ltd.                                   Bermuda
Belvex, Inc.                                             Texas
Big Diamond Number 1, Inc.                               Texas
Big Diamond, Inc.                                        Texas
Bioremetec Inc.                                          Canada
Canadian Marine Response Management                      Canada
     Corporation Ltd.
Canadian Ultramar Company                                Canada
Canadian Ultramar Holding Corp.                          Delaware
Colonnade Assurance Limited                              Bermuda
Colonnade Vermont Insurance Company                      Vermont
Colorado Refining Company                                Colorado
Corporate Claims Management, Inc.                        Texas
Cush-Po, Inc.                                            Oklahoma
D-S Mont Belvieu, Inc.                                   Texas
D-S Splitter, Inc.                                       Delaware
D-S Systems, Inc.                                        Delaware
D-S United, Inc.                                         Delaware
D-S Venture Company, L.l.c.                              Delaware
D-S World Energy, Inc.                                   Delaware
D. S. E. Pipeline Company                                Delaware
Diamond Reforming, Inc.                                  Delaware
Diamond Security Systems, Inc.                           Delaware
Diamond Shamrock Arizona, Inc.                           Delaware
Diamond Shamrock Boliviana, Ltd.                         California
Diamond Shamrock Leasing, Inc.                           Delaware
Diamond Shamrock of Bolivia, Inc.                        Delaware
Diamond Shamrock Pipeline Company                        Delaware
Diamond Shamrock Refining and                            Delaware
     Marketing Company
Diamond Shamrock Refining Company,                       Delaware
     L.P.
Diamond Shamrock Stations, Inc.                          Delaware
Dsrm National Bank                                       N/A
Eastern Canada Response Corporation                      Canada
     Ltd.
Emerald Corporation                                      Delaware
Emerald Marketing, Inc.                                  Texas
Emerald Pipe Line Corporation                            Delaware
Geo Williamson Fuels Ltd.                                Canada
Hanover Petroleum Corporation                            Delaware
Integrated Product Systems, Inc.                         Delaware
Kempco Petroleum Company                                 Texas
Laurelglen Holdings, Inc.                                Delaware
Les Carburants Ultra-GNV ENR.                            Canada
Les Petroles D. Kirouac Inc.                             Canada
Metro Oil Co.                                            Michigan
National Convenience Stores                              Delaware
     Incorporated
National Money Orders Incorporated                       Texas
Navajo Sales Company, Inc.                               Arizona
Oceanic Tankers Agency Limited                           Canada
Petro/chem Environmental Services,                       Delaware
     Inc.
Phoebus Energy Ltd.                                      Bermuda
Robinson Oil Company (1987) Limited                      Canada
Sallans Fuels Limited                                    Canada
Schepps Food Stores, Inc.                                Texas
Sea Eagle Insurance Company                              Hawaii
Shamrock Ventures, Ltd.                                  Bermuda
Sigmor Beverage, Inc.                                    Texas
Sigmor Corporation                                       Delaware
Sigmor Pipeline Company                                  Texas
Skelly-Belvieu Pipeline Company,                         Delaware
     L.L.C.
Skipper Beverage Company, Inc.                           Texas
Stop'n Go Markets of Georgia, Inc.                       Georgia
Stop'n Go Markets of Texas, Inc.                         Texas
Sunshine Beverage Co.                                    Texas
Texas Super Duper Markets, Inc.                          Texas
The Shamrock Pipe Line Corporation                       Delaware
TOC-DS Company                                           Delaware
Total Engineering & Research Company                     Colorado
Total Petroleum, Inc.                                    Michigan
Total Pipeline Corporation                               Michigan
UDS Capital I                                            Delaware
UDS Capital II                                           Delaware
UDS Corporation                                          Delaware
UDS Funding I, L.P.                                      Delaware
UDS Funding II, L.P.                                     Delaware
Ultramar Acceptance Inc.                                 Canada
Ultramar Credit Corporation                              Canada
Ultramar D.S., Inc.                                      Texas
Ultramar Energy Inc.                                     Delaware
Ultramar Inc.                                            Nevada
Ultramar Ltee / Ultramar Ltd.                            Canada
Ultramar Services Inc.                                   Canada
West Emerald Pipe Line Corporation                       Delaware
Xcel Products Company, Inc.                              Texas
Xral Storage and Terminaling Company                     Texas

21

                                                                  Exhibit 23.1

                         CONSENT OF INDEPENDENT AUDITORS

We consent to the  incorporation  by  reference  in the  following  Registration
Statements:  (i) Form  S-8  (No.33-52148)  pertaining  to the  Ultramar  Diamond
Shamrock  Corporation  1992  Long-Term  Incentive  Plan,  (ii) Form S-8 (No. 33-
62894) pertaining to the Ultramar Diamond Shamrock Corporation  Restricted Share
Plan for  Directors,  (iii) Form S-8 (No.  333-19131)  pertaining to the Diamond
Shamrock,  Inc. 1987  Long-Term  Incentive Plan and the Diamond  Shamrock,  Inc.
Long-Term  Incentive  Plan,  (iv)  Form  S-3  (Nos.   333-28737  and  333-46775)
pertaining to the universal  shelf  registration  of Ultramar  Diamond  Shamrock
Corporation,  (v) Form S-8 (No.  333-27697)  pertaining to the Ultramar  Diamond
Shamrock  Corporation  Non-Employee  Director  Equity  Plan,  (vi) Form S-8 (No.
333-27699)   pertaining  to  the  Ultramar  Diamond  Shamrock  Corporation  1996
Long-Term  Incentive  Plan,  (vii) Form S-8 (No.  333-27701)  pertaining  to the
Ultramar Diamond Shamrock Corporation 401(k) Retirement Savings Plan, and (viii)
Form S-8 (No. 333-27703) pertaining to the Ultramar Diamond Shamrock Corporation
Non-Qualified  401(k) Plan of our report dated  February 7, 1997 with respect to
the consolidated  financial statements and schedule of Ultramar Diamond Shamrock
Corporation  (formerly  Ultramar  Corporation)  for the years ended December 31,
1996 and 1995  included  in the  Annual  Report  (Form  10-K) for the year ended
December 31, 1997 filed with the Securities and Exchange Commission.

                                           /s/ ERNST & YOUNG LLP

San Antonio,  Texas
March 16, 1998

                                  

                                                                 Exhibit 23.2

                       CONSENT OF INDEPENDENT ACCOUNTANTS

We hereby consent to the  incorporation by reference in each of the Prospectuses
constituting  part of the  Registration  Statements of Ultramar Diamond Shamrock
Corporation  on Form S-3 (Nos.  333-28737 and  333-46775)  and on Form S-8 (Nos.
33-52148, 33-62894, 333-19131,  333-27697,  333-27699, 333-27701, and 333-27703)
of our report dated February 7, 1997 with respect to the consolidated  financial
statements and financial  statement schedule of the Diamond Shamrock  operations
of Ultramar  Diamond  Shamrock  Corporation,  appearing in Item 8 of this Annual
Report on Form 10-K.

                                           /s/ PRICE WATERHOUSE LLP

San Antonio,  Texas
March 16, 1998


                                  Exhibit 23.3

                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

As independent public accountants, we hereby consent to the incorporation of our
report  included  in  this  Form  10-K,  into  the  Company's  previously  filed
Registration  Statements on Form S-3 (Nos.  333-28737 and 333-46775) and on Form
S-8 (Nos. 33-52148, 33-62894,  333-19131,  333-27697,  333-27699,  333-27701 and
333-27703).


                                            /s/ ARTHUR ANDERSEN LLP

San Antonio,  Texas
March 16, 1998

24

                                  EXHIBIT 24.1

                                POWER OF ATTORNEY

     The  undersigned  directors  and/or officers of Ultramar  Diamond  Shamrock
Corporation,  hereby constitute and appoint Timothy J. Fretthold, H. Pete Smith,
Curtis  V.  Anastasio,  Todd  Walker,  or any of them,  their  true  and  lawful
attorneys-in-fact   and  agents,  each  with  full  power  of  substitution  and
resubstitution,  to do any and all acts and  things in their  name and behalf in
their  capacity  as a director  and/or  officer  of  Ultramar  Diamond  Shamrock
Corporation and to execute any and all instruments for them and in their name in
such capacity, which said attorneys-in-fact and agents, or any of them, may deem
necessary or advisable to enable Ultramar Diamond Shamrock Corporation to comply
with the Securities Exchange Act of 1934, as amended, and any rules, regulations
and requirements of the Securities and Exchange  Commission,  in connection with
the Annual Report on Form 10-K of Ultramar Diamond Shamrock  Corporation for the
fiscal year ended December 31, 1997,  including  without  limitation,  power and
authority to sign for them, in their name in the capacity  indicated above, such
Form 10-K and any and all  amendments  thereto,  and to file the same,  with all
exhibits  thereto,  and  other  documents  in  connection  therewith,  with  the
Securities and Exchange Commission, hereby ratifying and confirming all that the
said  attorneys-in-fact  and agents, or their substitute or substitutes,  or any
one of them, shall do or cause to be done by virtue hereof.


/s/ R. R. HEMMINGHAUS                       /s/ JEAN GAULIN
    R. R. HEMMINGHAUS                           JEAN GAULIN


/s/ E. GLENN BIGGS                         /s/ BYRON ALLUMBAUGH
    E. GLENN BIGGS                             BYRON ALLUMBAUGH

/s/ W. E. BRADFORD                         /s/ H. FREDERICK CHRISTIE
    W. E. BRADFORD                             H. FREDERICK CHRISTIE

/s/ W. H. CLARK                            /s/ RUSSELL H. HERMAN
    W. H. CLARK                                RUSSELL H. HERMAN

/s/ BOB MARBUT                             /s/ MADELEINE SAINT-JACQUES
    BOB MARBUT                                 MADELEINE SAINT-JACQUES

/s/ KATHERINE D. ORTEGA                    /s/ C. BARRY SCHAEFER
    KATHERINE D. ORTEGA                        C. BARRY SCHAEFER

                                           /s/ H. PETE SMITH
                                               H. PETE SMITH

Dated: February 4, 1998

25

                                  EXHIBIT 24.2

                                POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that the undersigned, on behalf of Ultramar
Diamond Shamrock Corporation, a Delaware corporation (the "Corporation"), hereby
constitutes  and  appoints  Timothy  J.  Fretthold,  H.  Pete  Smith,  Curtis V.
Anastasio,  and Todd Walker,  attorneys-in-fact  and agents of the  Corporation,
with full power of substitution and  resubstitution,  to do any and all acts and
things in its name and on its behalf and to execute any and all  instruments  in
its name in such capacity which they may deem appropriate or advisable to enable
the Corporation to comply with the Securities  Exchange Act of 1934, as amended,
and any rules and  regulations  of the Securities  and Exchange  Commission,  in
connection with the Corporation's Annual Report on Form 10-K for the fiscal year
ended December 31, 1997,  including without  limitation,  the power to sign such
report on the Corporation's  behalf and to sign any amendments  thereto,  and to
file the same,  with all  exhibits  thereto,  and other  documents  required  in
connection therewith,  with the Securities and Exchange Commission,  granting to
each and all of said  attorneys-in-fact,  full  power  and  authority  to do and
perform  each and every  act and thing  requisite  and  necessary  to be done in
connection with the filing of such report as herein described.

ULTRAMAR DIAMOND SHAMROCK CORPORATION



/s/ R. R. HEMMINGHAUS
    R. R. Hemminghaus
    Chairman of the Board and
    Chief Executive Officer

Dated: February 4, 1998


<TABLE> <S> <C>

<ARTICLE>                     5
<MULTIPLIER>                                   1,000
       
<S>                                           <C>
<PERIOD-TYPE>                                  12-MOS
<FISCAL-YEAR-END>                              DEC-31-1997
<PERIOD-END>                                   DEC-31-1997
<CASH>                                              92,000
<SECURITIES>                                             0
<RECEIVABLES>                                      690,100
<ALLOWANCES>                                        16,200
<INVENTORY>                                        741,000
<CURRENT-ASSETS>                                 1,610,800
<PP&E>                                           4,654,300
<DEPRECIATION>                                   1,093,300
<TOTAL-ASSETS>                                   5,594,700
<CURRENT-LIABILITIES>                            1,250,700
<BONDS>                                          1,866,400
                              200,000
                                             17
<COMMON>                                               877
<OTHER-SE>                                       1,685,706
<TOTAL-LIABILITY-AND-EQUITY>                     5,594,700
<SALES>                                         10,882,400
<TOTAL-REVENUES>                                10,882,400
<CGS>                                            6,817,500
<TOTAL-COSTS>                                    6,817,500
<OTHER-EXPENSES>                                 3,680,500
<LOSS-PROVISION>                                         0
<INTEREST-EXPENSE>                                 131,700
<INCOME-PRETAX>                                    275,200
<INCOME-TAX>                                       110,200
<INCOME-CONTINUING>                                159,600
<DISCONTINUED>                                           0
<EXTRAORDINARY>                                      4,800
<CHANGES>                                               0
<NET-INCOME>                                       154,800
<EPS-PRIMARY>                                         1.93
<EPS-DILUTED>                                         1.88
        

</TABLE>


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission