<ARTICLE>                     5
<LEGEND>
RESTATED Ultramar Diamond Shamrock Corporation
Second Quarter 1997
</LEGEND>
<RESTATED>
<MULTIPLIER>                   1,000
       
                 
<PERIOD-TYPE>                              6-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               JUN-30-1997
<CASH>                                          93,000
<SECURITIES>                                         0
<RECEIVABLES>                                  461,500
<ALLOWANCES>                                   (15,500)
<INVENTORY>                                    562,700
<CURRENT-ASSETS>                             1,172,500
<PP&E>                                       3,730,200
<DEPRECIATION>                              (1,011,200)
<TOTAL-ASSETS>                               4,195,800
<CURRENT-LIABILITIES>                          778,300
<BONDS>                                      1,527,600
<PREFERRED-MANDATORY>                          200,000
<PREFERRED>                                         17
<COMMON>                                           700
<OTHER-SE>                                   1,273,783
<TOTAL-LIABILITY-AND-EQUITY>                 4,195,800
<SALES>                                      4,964,600
<TOTAL-REVENUES>                             4,964,600
<CGS>                                        3,135,500
<TOTAL-COSTS>                                3,135,500
<OTHER-EXPENSES>                             1,655,900
<LOSS-PROVISION>                                 7,700
<INTEREST-EXPENSE>                              62,100
<INCOME-PRETAX>                                122,300
<INCOME-TAX>                                    48,400
<INCOME-CONTINUING>                             73,900
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    73,900
<EPS-PRIMARY>                                     0.95
<EPS-DILUTED>                                     0.94