1 EXHIBIT 12 THE LUBRIZOL CORPORATION AND SUBSIDIARIES Computation of Ratio of Earnings to Fixed Charges (all amounts except ratios are shown in thousands) 1997 1996 1995 1994 1993 -------- -------- -------- -------- ------ Pretax income $231,147 $250,608 $225,574 $251,459 $119,651 Deduct earnings of less than 50% owned affiliates (net of distributed earnings) included in pretax income (3,018) (48) (1,384) (871) (2,355) Add losses of less than 50% owned affiliates included in pretax income 66 56 1,808 490 21,063 Add fixed charges net of capitalized interest 10,803 10,955 10,376 3,149 4,154 Add previously capitalized interest amortized during period 1,118 968 1,096 452 272 ------- ------- ------- ------- ------- "Earnings" $240,116 $262,539 $237,470 $254,679 $142,785 ======= ======= ======= ======= ======= Gross interest expense including capitalized interest ("Fixed Charges") $ 13,194 $ 14,010 $ 14,693 $ 6,922 $ 6,292 Ratio of earnings to fixed charges 18.2 18.7 16.2 36.8 22.7 SPECIAL ADJUSTMENTS: "Earnings" $240,116 $262,539 $237,470 $254,679 $142,785 Plus asset impairment and special charges 9,489 86,303 Less gains on investments (53,280) (38,459) (41,235) (42,443) ------- ------- ------- ------- ------- Adjusted "Earnings" $240,116 $209,259 $208,500 $213,444 $186,645 ======= ======= ======= ======= ======= Ratio of adjusted earnings to fixed charges 18.2 14.9 14.2 30.8 29.7