When input = hydrocarbon plus oxygen, output = carbon dioxide and
water. However, reality isn't that pure - LOTS of other stuff in the
air and fuel.

> Actually there is quite a bit of water vapor that comes out of the tailpipe 
> in most any engine. The water that you see dripping out of your tailpipe each 
> morning is not from condensation, it is water vapor, a by product of the 
> combustion process. When the engine is warmed up, the water is still there, 
> you just can't see it as it comes out as "steam". I once saw a stat on how 
> much water comes out of an engine going down the road and it was pretty 
> impressive, like gallons per mile as I recall. Another good indication of 
> this phenomenem is the "contrails" or condensation trails left by jet 
> aircraft. In this case the water ejected with the engine exhaust quickly 
> cools at those high altitudes and looks like smoke, but it is really a trail 
> of ice crystals.
> Barry

Norman, OK
'90 300D 243K, '87 300SDL 290K,  '81 240D 173K,  '78 450SLC 67K, '97
Ply Grand Voyager 78K

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