EXHIBIT 12
TENNECO INC. AND CONSOLIDATED SUBSIDIARIES
COMBINED WITH 50% OWNED UNCONSOLIDATED SUBSIDIARIES
COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES
<Table>
<Caption>
YEARS ENDED DECEMBER 31,
-------------------------------------
2007 2006 2005 2004 2003
----- ----- ----- ----- -----
(DOLLARS IN MILLIONS)
Income (loss) before cumulative effect of change
in accounting principle........................ $ (5) $ 49 $ 56 $ 9 $ 25
Add:
Interest expense............................... 164 136 133 178 146
Portion of rentals representative of the
interest factor............................. 12 12 12 11 11
Income tax expense (benefit) and other taxes on
income...................................... 83 5 26 (21) (6)
Minority interest.............................. 10 6 2 4 6
Amortization of interest capitalized........... 3 3 2 1 1
Undistributed (earnings) losses of affiliated
companies in which less than a 50% voting
interest is owned........................... (1) (3) (1) -- 2
----- ----- ----- ----- -----
Earnings as defined......................... $ 266 $ 208 $ 230 $ 182 $ 185
===== ===== ===== ===== =====
Interest expense................................. $ 164 $ 136 $ 133 $ 178 $ 146
Interest capitalized............................. 6 6 3 2 4
Portion of rentals representative of the interest
factor......................................... 12 12 12 11 11
----- ----- ----- ----- -----
Fixed charges as defined.................... $ 182 $ 154 $ 148 $ 191 $ 161
===== ===== ===== ===== =====
Ratio of earnings to fixed charges............... 1.46 1.35 1.55 0.95 1.15
===== ===== ===== ===== =====
</Table>
- --------
NOTE: Earnings were inadequate to cover fixed charges by $9 million for the year
ended December 31, 2004.
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