EXHIBIT 12 TENNECO INC. AND CONSOLIDATED SUBSIDIARIES COMBINED WITH 50% OWNED UNCONSOLIDATED SUBSIDIARIES COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (UNAUDITED) <Table> <Caption> THREE MONTHS ENDED MARCH 31, ------------- 2008 2007 ----- ----- (DOLLARS IN MILLIONS) Net income....................................................... $ 6 $ 5 Add: Interest expense................................................. 25 40 Portion of rentals representative of the interest factor......... 4 3 Income tax expense (benefit) and other taxes on income........... 5 2 Minority interest................................................ 3 2 Amortization of interest capitalized............................. 1 -- Undistributed (earnings) losses of affiliated companies in which less than a 50% voting interest is owned....................... (2) -- ----- ----- Earnings as defined............................................ $ 42 $ 52 ===== ===== Interest expense................................................. $ 25 $ 40 Interest capitalized............................................. 2 1 Portion of rentals representative of the interest factor......... 4 3 ----- ----- Fixed charges as defined....................................... $ 31 $ 44 ===== ===== Ratio of earnings to fixed charges............................... 1.35 1.18 ===== ===== </Table>