EXHIBIT 10.2

____________________  ("Executive") and Ultramar Diamond Shamrock Corporation, a
Delaware corporation (the "Company"),  hereby enter into this First Amendment to
the  Employment  Agreement  between  Executive  and  the  Company,  dated  as of
____________________, and effective as of _________________ (the "Agreement").

WHEREAS, the Executive serves as __________________ of the Company; and

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

WHEREAS,  Section 12.8 of the 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,  the Company  considers it in the best interests of its stockholders to
foster the continued employment of certain key management personnel; and

WHEREAS,  the Company  wishes to amend the  Agreement to add certain  provisions
approved by the Compensation  Committee of the Board of Directors of the Company
at a meeting held on May 1, 2000.

NOW, THEREFORE,  in consideration of the promises and mutual covenants contained
herein and in the Agreement, it is agreed that, effective as of May 1, 2000, the
Agreement shall be amended as follows:

                                       I.

A new final sentence is added to Section 4.2 of the Agreement as follows:

         Notwithstanding  any other provision of the Agreement,  or the terms of
         the Ultramar Diamond Shamrock Corporation  Retirement  Restoration Plan
         (the "RRP"), to the contrary, Executive (and Executive's beneficiaries)
         shall be entitled to no benefits under, or with respect to, the RRP, in
         acknowledgment  of the fact that such benefits  will be provided  under
         the  supplemental  executive  retirement  plan of the  Company in which
         Executive participates.

                                       II.

Section  5.2(i) of the  Agreement  is hereby  deleted and  substituted  with the
following:

                  (i) If the Company determines in good faith that the Executive
         has  incurred a  Disability  (as defined  below)  during the Term,  the
         Company  may give the  Executive  written  notice of its  intention  to
         terminate its obligations  under this Agreement,  which notice may, but
         need not,  include a statement of the Company's intent to terminate the
         Executive's employment.  In such event, the Company's obligations under
         this Agreement,  and the Executive's  employment (if applicable),  will
         terminate effective on the 30th day after receipt of such notice by the
         Executive (the "Disability Termination Date"), provided that within the
         30 days after such  receipt,  the  Executive  will not have returned to
         full-time  performance  of his duties.  The Executive  will continue to
         receive his annual base salary until the Disability  Termination  Date.
         The Executive  will continue to receive  benefits  until the Disability
         Termination  Date,  provided  that if the  Company  has not  elected to
         terminate the Executive's  employment  under this provision (but rather
         to  terminate  only  its  obligations   under  this   Agreement),   the
         Executive's  right  to  continue  to  receive  benefits  following  the
         Disability  Termination  Date  will be  governed  by the  policies  and
         procedures of the Company generally  applicable to disabled  employees.
         In that event,  the Executive  will be considered an "employee at will"
         following the Disability  Termination Date, and either the Executive or
         the Company may thereafter terminate the Executive's employment for any
         reason  or for  no  reason,  and  the  rights  and  obligations  of the
         Executive and the Company upon such termination will be governed by the
         policies and procedures of the Company applicable to employees at will,
         and by applicable law.

         In the event of the  Executive's  disability,  the Company will pay the
         Executive,  promptly  after the  Disability  Termination  Date, (a) the
         unpaid annual base salary to which he is entitled,  pursuant to Section
         4.1, through the Disability  Termination  Date, (b) for any accrued but
         unused  vacation  days,  to the  extent  and in the  amounts,  if  any,
         provided under the Company's usual policies and arrangements, and (c) a
         lump sum in cash in an amount equal to 50% of his annual base salary at
         the Disability  Termination  Date.  This Section 5.2 will not limit the
         entitlement of the Executive,  the Executive's  estate or beneficiaries
         to any  disability or other  benefits  then  available to the Executive
         under any disability  insurance or other benefit plan or policy that is
         maintained by the Company for the  Executive's  benefit;  provided that
         (i)  any   amounts   paid   as  base   salary   shall   offset,   on  a
         dollar-for-dollar  basis (but not below zero), the Company's obligation
         to  pay  the  Executive   short-term   disability  benefits  under  any
         short-term  disability plan, program or arrangement of the Company,  in
         respect of the same period for which such base salary is paid, and (ii)
         any benefits paid pursuant to the Company's  long-term  disability plan
         shall reduce,  on a  dollar-for-dollar  basis (but not below zero), the
         Company's obligation to pay the Executive base salary in respect of the
         same period for which such benefits are paid; provided,  however,  that
         any such offset or reduction  shall not affect,  or be affected by, the
         payment provided to be made in accordance with clauses (a), (b), or (c)
         of this Section 5.2(i).

                                      III.

Section 5.5(i)(a) of the Agreement shall be revised to read as follows:

                  (i) Form and Amount. Upon Executive's involuntary termination,
other than for Cause, the Company shall:

                      (a) subject to Section 5.5(iii), pay or provide Executive

      (1) his annual salary and benefits until the date of termination,

                           (2) within five  business  days after any  revocation
         period in the release described in Section 5.5(iii) has expired, a lump
         sum cash payment  equal to three  multiplied by the sum of (x) and (y),
         where (x) is  Executive's  highest  annual base salary in effect during
         the  three  years  prior  to his  date of  termination,  and (y) is the
         highest annual  incentive  compensation  earned by Executive during the
         three  years  prior to his  termination;  provided,  however,  that all
         amounts received by Executive pursuant to the Ultramar Diamond Shamrock
         Corporation  Intermediate  Incentive and  Performance-Based  Restricted
         Stock Plan shall not be considered "annual incentive  compensation" for
         purposes of this Section 5.5(i)(a)(2),

                           (3) three  additional years of age and service credit
         under all  Company-sponsored  employee  benefit  plans,  including  all
         retirement income plans and welfare benefit plans, policies or programs
         or arrangements in which Executive participates, including any savings,
         pension,  supplemental  executive retirement or other retirement income
         or  welfare  benefit,  short and  long-term  disability,  and any other
         deferred  compensation,  group and/or executive life,  health,  retiree
         health, medical/hospital,  or other insurance (whether funded by actual
         insurance or self-insured  by the Company),  expense  reimbursement  or
         other employee benefit plans, policies, programs or arrangements or any
         equivalent successor plans, policies, programs or arrangements that may
         not now exist or may be adopted  hereafter  by the Company (but only to
         the extent that  eligibility,  vesting,  or the timing or amount of the
         benefit are dependent upon age and service); provided, however, that in
         the case of a qualified  defined benefit pension plan  (hereafter,  the
         "Qualified Plan"), (i) if such aforementioned  involuntary  termination
         occurs prior to, or  contemporaneous  with,  the occurrence of an event
         entitling  Executive  to a lump sum  payment  under the  provisions  of
         either the Ultramar Corporation  Supplemental Executive Retirement Plan
         (or any equivalent  successor  plan,  policy,  program or  arrangement)
         (collectively,  the  "Ultramar  SERP") or the  Diamond  Shamrock,  Inc.
         Supplemental  Executive  Retirement  Plan (or any equivalent  successor
         plan,  policy,  program or arrangement)  (collectively,  the "DS SERP")
         pertaining  to "Change in Control"  (as defined in either the  Ultramar
         SERP or the DS  SERP,  as the  case  may  be),  disregarding  for  this
         purpose,  any "Change in Control"  occurring  prior to December 4, 1996
         (collectively, a "SERP Lump Sum Payment"), in lieu of granting any such
         actual  additional  years of age and service credit under the Qualified
         Plan,  an amount equal to the present value of the  additional  benefit
         Executive  would have accrued if he had been  credited for all purposes
         with the three  additional years of age and service under the Qualified
         Plan as of his date of  termination  with the Company will be paid in a
         lump sum in cash within five business days after any revocation  period
         in the release  described  in Section  5.5(iii) has expired and (ii) if
         such  aforementioned   involuntary  termination  occurs  following  the
         occurrence of an event entitling  Executive to a SERP Lump Sum Payment,
         in lieu of granting any such additional years of age and service credit
         under the  Qualified  Plan,  an amount  equal to the  excess of (A) the
         present value of the additional benefit Executive would have accrued if
         he had been credited for all purposes with the three  additional  years
         of  age  and  service  under  the  Qualified  Plan  as of his  date  of
         termination with the Company over (B) the amount by which the SERP Lump
         Sum Payment would,  under the terms of the Ultramar SERP or DS SERP (as
         the case may be), have been reduced had the aforementioned  involuntary
         termination instead occurred contemporaneous with the occurrence of the
         event entitling Executive to the SERP Lump Sum Payment, will be paid in
         a lump sum in cash  within  five  business  days  after any  revocation
         period in the release  described in Section 5.5(iii) has expired,  with
         (i)  in  the  event   that   Executive's   aforementioned   involuntary
         termination occurs on or after a "Change in Control" of the Company, as
         defined in Section  6.2 (or prior to, but in  anticipation  of,  such a
         "Change in  Control"),  such present  value being  determined,  in both
         cases, using the interest rate and mortality table set forth in Section
         4.1(m)(i) and 4.1(n)(i), respectively, of the Ultramar SERP and (ii) in
         the event that Employee's aforementioned involuntary termination occurs
         prior to such a "Change in Control"  of the Company  (other than such a
         termination  in  anticipation  of such a  "Change  in  Control"),  such
         present  value  being  determined,  in each  such  case,  using  in the
         interest rate and mortality  table set forth in Section  4.1(m)(ii) and
         4.1(n)(ii),  respectively,  of the Ultramar  SERP;  further,  provided,
         however, that, in determining the amount of the benefit which Executive
         is entitled to receive,  determined  with  respect to the DS SERP,  the
         three  additional  years of age and  service  credit  which the Company
         would otherwise pay, or provide, Executive under the DS SERP shall not,
         pursuant to this clause (3), be taken into  account  under the DS SERP,
         to the extent that Executive was otherwise  previously so credited with
         three additional years of age and service credit under the terms of the
         DS SERP  pertaining to "Change in Control;" and further,  provided,  in
         crediting the three additional years of age and service for purposes of
         calculating  current and unused vacation such additional years shall be
         applied in determining the amount of annual vacation to which Executive
         is entitled,  but shall not be deemed to cause Executive to have earned
         three additional years worth of unused vacation,

                           (4) within five  business  days after any  revocation
         period in the release described in Section 5.5(iii) has expired, a lump
         sum cash  payment  equal to three times the maximum  amount the Company
         could  have   contributed   on  behalf  of  Executive  to  all  of  the
         Company-sponsored   qualified  and  nonqualified  defined  contribution
         retirement  plans in which Executive  participated for any of the three
         years  ending on the date of  Executive's  termination  of  employment,
         assuming  that  Executive  made  the  maximum  voluntary  contributions
         thereto,

                           (5) for a period  of three  years  after  the date of
         Executive's termination of employment, the continuation of the employee
         welfare  benefits  set forth in Section 4.2 (other than  short-term  or
         long-term  disability  benefits),  except as offset by benefits paid by
         other  sources as set forth in Section  8.2,  or as provided in Section
         5.5(ii) (provided,  however,  that in the event that any such continued
         coverage is not  permitted  under the terms of any  applicable  welfare
         plan or policy,  the Company shall provide Executive with the after-tax
         economic equivalent of any coverage foregone,  such economic equivalent
         to be  deemed  to be no  less  than  the  total  cost to  Executive  of
         obtaining such coverage on an individual basis and to be paid quarterly
         in advance without discount);

                                       IV.

Section  5.5(i) of the Agreement  shall be amended by striking the period at the
end of Subsection 5.5(i)(b) and inserting the following in lieu thereof:

         ; and  (c)  the  Company  shall  provide  Executive  with  outplacement
         services for a period of one year commencing on the date his employment
         is terminated in accordance with the Company's  executive  outplacement
         policy  in  effect  at  the  time  his   employment  is  terminated  or
         immediately  prior to a Change in Control (if prior to his  termination
         of employment), whichever is more generous.

                                       V.

Section  5.5(ii) of the Agreement  shall be amended by striking the reference to
"Section  5.5(i)(a)(4)" and inserting "Section 5.5(i)(a)(5)" in lieu thereof and
adding a new sentence to the end thereof which shall read as follows:

         Notwithstanding  the above, if Executive's  continued  participation in
         any of the benefits  referenced in Section  5.5(i)(a)(5)  would violate
         any applicable law or cause any benefits plan,  policy,  or arrangement
         of the Company to fail to qualify for tax-favored  status,  the Company
         shall not be required to provide such benefits to Executive through the
         Company's plans,  policies,  or arrangements,  but instead shall either
         (A)  arrange  to make a  substantially  similar  benefit  available  to
         Executive at no cost to the Executive or (B) pay Executive a sufficient
         amount of cash to allow Executive to purchase, on an after-tax basis, a
         substantially similar benefit on the open market at no incremental cost
         to Executive.

                                       VI.

Section 5.5 of the Agreement shall be amended by adding a new subsection (iv) to
the end thereof which shall read as follows:

                  (iv) Other Severance  Benefits.  Notwithstanding any provision
         of this  Agreement  to the  contrary,  Executive  shall be  entitled to
         receive  the  greater  of (a) the  termination  payments  and  benefits
         provided under Section 5.5 of this  Agreement,  or (b) the  termination
         payments and  benefits  provided by any other  Company-sponsored  plan,
         program or policy  which has as its primary  purpose the  provision  of
         severance  benefits,  but in no event  shall  Executive  be eligible to
         receive  termination  payments  and benefits  provided  under both this
         Agreement and any such plan, program or policy.

                                      VII.

Section 8 of the Agreement shall be revised to read as follows:



         8.       Mitigation and Offset.
                  ---------------------

                  8.1  Executive's  right to receive  when due the  payments and
         other benefits  provided for under and in accordance  with the terms of
         this  Agreement is absolute,  unconditional  and subject to no set-off,
         counterclaim  or legal equitable  defense.  Any claim which the Company
         may have  against  Executive,  whether for breach of this  Agreement or
         otherwise,  shall be brought in a separate action or proceeding and not
         part of any action or  proceeding  brought by  Executive to enforce the
         rights against the Company under this Agreement.

                  8.2 Executive  shall not have any duty to mitigate the amounts
         payable by the Company under this  Agreement  upon any  termination  of
         employment by seeking new employment following termination. All amounts
         payable  pursuant to this  Agreement  shall be paid  without  reduction
         regardless of any amount of salary, compensation or other amounts which
         may be paid or  payable  to  Executive  as the  result  of  Executive's
         employment by another  employer;  provided,  however,  that Executive's
         coverage under the Company's  welfare  benefit plans will be reduced to
         the extent that Executive becomes covered under any comparable employee
         benefit plan made  available by another  employer and covering the same
         type of  benefits.  Executive  shall  report  to the  Company  any such
         benefits actually received by him.

                                      VIII.

Section 12.5(i) of the Agreement shall be amended to read as follows:

                  (i) To The Company.  If  to  the  Company,  addressed  to  the
attention of the Chief Executive Officer at P.O. Box 696000, San Antonio, Texas,
78269-6000,  with  a  copy  sent to the attention of the General Counsel at such
address.

                                       IX.

Section 12 of the Agreement shall be amended to add a new Subsection 12.11 which
shall read as follows:

                  12.11 Dialogue.  Unless  Executive  otherwise  consents by the
         execution  of an  instrument  in writing  that  specifically  refers to
         Section 12.11 of this Agreement,  no claim or dispute arising out of or
         related to this Agreement or any other agreement, policy, plan, program
         or  arrangement,   including  without  limitation,   any  qualified  or
         nonqualified  retirement plan,  stock option plan or agreement,  or any
         other equity  incentive plan in which Executive  participated  prior to
         his  termination,  shall be subject to the Company's  Dialogue  Dispute
         Resolution Program.

                                       X.

The model  release  attached  to this First  Amendment  as  "Exhibit A" shall be
substituted for the exhibit referred to in Section 5.5(iii) of the Agreement.

                                       XI.

Except as otherwise  provided  herein,  the Agreement shall remain in full force
and effect.

IN WITNESS WHEREOF, the parties have executed this Agreement as of the first day
of May, 2000.


_____________________________________
Executive

ULTRAMAR DIAMOND SHAMROCK CORPORATION


By:__________________________________

Title:_______________________________