PAGE 1

                                                                      EXHIBIT 12

STATEMENT RE COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (a)
Sunoco, Inc. and Subsidiaries

(Millions of Dollars Except Ratio)
- --------------------------------------------------------------------------------
                                                                For the Nine
                                                                Months Ended
                                                             September 30, 1999
                                                            --------------------
                                                                 (UNAUDITED)

Fixed Charges:
  Consolidated interest cost and debt expense                       $  61
  Interest allocable to rental expense(b)                              29
                                                                    -----
   Total                                                            $  90
                                                                    =====

Earnings:
  Consolidated income before income tax expense                     $  90
  Proportionate share of income tax expense of
   50 percent owned but not controlled affiliated
   companies                                                            3
  Equity in income of less than 50 percent owned
   affiliated companies                                                (9)
  Dividends received from less than 50 percent
   owned affiliated companies                                           4
  Fixed charges                                                        90
  Interest capitalized                                                 (1)
  Amortization of previously capitalized interest                       9
                                                                    -----
   Total                                                            $ 186
                                                                    =====
Ratio of Earnings to Fixed Charges                                   2.07
                                                                    =====

- ----------------
(a) The consolidated financial statements of Sunoco, Inc. and subsidiaries
    contain the accounts of all subsidiaries that are controlled (generally more
    than 50 percent owned) except for Radnor Corporation, the Company's wholly
    owned real estate development subsidiary, which is accounted for as an
    investment held for sale. Affiliated companies over which the Company has
    the ability to exercise significant influence but that are not controlled
    (generally 20 to 50 percent owned) are accounted for by the equity method.
(b) Represents one-third of total operating lease rental expense which is that
    portion deemed to be interest.