<ARTICLE>                     5
<LEGEND>
AMENDED
Ultramar Diamond Shamrock Corporation
First Quarter 1997
</LEGEND>
<RESTATED>
<MULTIPLIER>                            1,000
       
                 
<PERIOD-TYPE>                              3-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               MAR-31-1997
<CASH>                                          99,400
<SECURITIES>                                         0
<RECEIVABLES>                                  450,000
<ALLOWANCES>                                   (15,100)
<INVENTORY>                                    543,400
<CURRENT-ASSETS>                             1,149,000
<PP&E>                                       3,674,000
<DEPRECIATION>                                (976,700)
<TOTAL-ASSETS>                               4,128,300
<CURRENT-LIABILITIES>                          919,500
<BONDS>                                      1,579,800
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                         17
<COMMON>                                           700
<OTHER-SE>                                   1,243,283
<TOTAL-LIABILITY-AND-EQUITY>                 4,128,300
<SALES>                                      2,550,200
<TOTAL-REVENUES>                             2,550,200
<CGS>                                        1,649,700
<TOTAL-COSTS>                                1,649,700
<OTHER-EXPENSES>                               831,300
<LOSS-PROVISION>                                 4,300
<INTEREST-EXPENSE>                              32,500
<INCOME-PRETAX>                                 45,800
<INCOME-TAX>                                    18,200
<INCOME-CONTINUING>                             27,600
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    27,600
<EPS-PRIMARY>                                     0.35
<EPS-DILUTED>                                     0.35