EXHIBIT 11.1 VALERO ENERGY CORPORATION AND SUBSIDIARIES COMPUTATION OF EARNINGS PER SHARE (Thousands of Dollars, Except Per Share Amounts) Three Months Ended March 31, 1998 1997 COMPUTATION OF BASIC EARNINGS PER SHARE: Income (loss) from continuing operations............. $ (5,884) $ 19,811 Loss from discontinued operations, net of income tax benefit................................ $ - $ (4,371) Less: Preferred stock dividend requirements and redemption premium............................ - (2,766) Loss from discontinued operations applicable to common stock................................... $ - $ (7,137) Weighted average number of shares of common stock outstanding.......................... 56,148,924 44,411,705 Earnings (loss) per share: Continuing operations............................. $ (.11) $ .45 Discontinued operations........................... - (.16) Total.......................................... $ (.11) $ .29 COMPUTATION OF EARNINGS PER SHARE ASSUMING DILUTION: Income (loss) from continuing operations assuming dilution.................................. $ (5,884) $ 19,811 Loss from discontinued operations, net of income tax benefit................................ $ - $ (4,371) Less: Preferred stock dividend requirements and redemption premium............................ - (2,766) Add: Reduction of preferred stock dividends applicable to the assumed conversion of convertible preferred stock at the beginning of the period..................................... - 2,695 Loss from discontinued operations applicable to common stock assuming full dilution............... $ - $ (4,442) Weighted average number of shares of common stock outstanding.......................... 56,148,924 44,411,705 Effect of dilutive securities: Stock options..................................... - (a) 819,124 Performance awards................................ - (a) 91,151 Convertible preferred stock....................... - 6,381,798 Weighted average number of shares of common stock outstanding assuming dilution....... 56,148,924 51,703,778 Earnings (loss) per share - assuming dilution: Continuing operations............................. $ (.11) $ .38 Discontinued operations........................... - (.08) Total.......................................... $ (.11) $ .30 <FN> (a) Various stock options and performance awards granted to employees in connection with the Company's stock compensation plans were outstanding during the three months ended March 31, 1998 but were not included in the computation of diluted earnings per share from continuing operations for such period because the effect would have been antidilutive. See Note 7 of Notes to Consolidated Financial Statements.