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                                                                      EXHIBIT 11
 
                          FINA, INC. AND SUBSIDIARIES
 
               COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES
                  FOR THE FIVE YEARS ENDING DECEMBER 31, 1996
                                 (IN THOUSANDS)
 
FINA, INC. CONSOLIDATED
 
<TABLE>
<CAPTION>
                                            1996       1995       1994       1993       1992
                                          --------   --------   --------   --------   --------
<S>                                       <C>        <C>        <C>        <C>        <C>
Net pre-tax earnings....................  $228,262   $161,078   $152,357   $ 96,115   $ 20,110
Fixed charges...........................    55,086     61,561     56,010     69,106     71,743
Adjustment for capitalized interest.....    (4,889)    (7,873)    (2,422)    (3,234)    (2,702)
                                          --------   --------   --------   --------   --------
  Earnings as adjusted (A)..............  $278,459   $214,766   $205,945   $161,987   $ 89,151
                                          ========   ========   ========   ========   ========
Fixed Charges:
Interest Expense:.......................  $ 43,137   $ 50,707   $ 47,023   $ 58,190   $ 61,762
Rents under leases representative of an
  interest factor (1)...................    11,949     10,854      8,987     10,916      9,981
                                          --------   --------   --------   --------   --------
Fixed Charges as adjusted (B)...........  $ 55,086   $ 61,561   $ 56,010   $ 69,106   $ 71,743
                                          ========   ========   ========   ========   ========
          RATIO OF EARNINGS TO FIXED
            CHARGES:
            (A) DIVIDED BY (B)..........       5.1        3.5        3.7        2.3        1.2
                                          ========   ========   ========   ========   ========
</TABLE>
 
FOCC CONSOLIDATED
 
<TABLE>
<CAPTION>
                                            1996       1995       1994       1993       1992
                                          --------   --------   --------   --------   --------
<S>                                       <C>        <C>        <C>        <C>        <C>
Net pre-tax earnings....................  $204,670   $152,824   $145,819   $100,147   $ 17,818
Fixed charges...........................    54,980     61,420     55,863     68,747     71,557
Adjustment for capitalized interest.....    (4,852)    (7,788)    (2,371)    (3,198)    (2,663)
                                          --------   --------   --------   --------   --------
  Earnings as adjusted (A)..............  $254,798   $206,456   $199,311   $165,696   $ 86,712
                                          ========   ========   ========   ========   ========
Fixed Charges:
Interest Expense........................  $ 43,134   $ 50,706   $ 47,021   $ 58,182   $ 61,717
Rents under leases representative of an
  interest factor(1)....................    11,846     10,714      8,842     10,565      9,840
                                          --------   --------   --------   --------   --------
  Fixed Charges as adjusted (B).........  $ 54,980   $ 61,420   $ 55,863   $ 68,747   $ 71,557
                                          ========   ========   ========   ========   ========
          RATIO OF EARNINGS TO FIXED
            CHARGES:
            (A) DIVIDED BY (B)..........       4.6        3.4        3.6        2.4        1.2
                                          ========   ========   ========   ========   ========
</TABLE>
 
---------------
 
(1) Management of the Company believes approximately one-third of rental and
    lease expense is representative of the interest component of rent expense.
 
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