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,
---------------------------------
2005 2004 2003 2002 2001
---- ---- ---- ---- -----
(DOLLARS IN MILLIONS)
Income (loss) before cumulative effect of change in
accounting principle................................... $ 58 $ 15 $ 26 $ 31 $(131)
Add:
Interest expense....................................... 130 179 149 141 170
Portion of rentals representative of the interest
factor.............................................. 12 11 11 11 10
Income tax expense (benefit) and other taxes on
income.............................................. 25 (24) (7) (7) 50
Minority interest...................................... 2 4 6 4 --
Amortization of interest capitalized................... 2 1 1 1 1
Undistributed (earnings) losses of affiliated companies
in which in less than a 50% voting interest is
owned............................................... (1) -- 2 2 1
---- ---- ---- ---- -----
Earnings as defined................................. $228 $186 $188 $183 $ 101
==== ==== ==== ==== =====
Interest expense......................................... $130 $179 $149 $141 $ 170
Interest capitalized..................................... 3 2 4 4 3
Portion of rentals representative of the interest
factor................................................. 12 11 11 11 10
---- ---- ---- ---- -----
Fixed charges as defined............................ $145 $192 $164 $156 $ 183
==== ==== ==== ==== =====
Ratio of earnings to fixed charges....................... 1.57 0.97 1.15 1.17 0.55
==== ==== ==== ==== =====
</Table>
- ---------------
NOTE: Earnings were inadequate to cover fixed charges by $6 million and $82
million for the years ended December 31, 2004, and 2001, respectively.
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