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Old 09-20-2009, 07:08 PM   #10 (permalink)
MadisonMPG
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Join Date: Nov 2008
Location: Madison AL
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The Geo - '93 Geo Metro
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Quote:
Originally Posted by 99LeCouch View Post
I too notice a 10% drop in fuel economy using ethanol fuel. I believe it's something with the 3800 engine and programming, as other folks with the same engine/transmission combination notice a similar drop in economy when running E10.

Now a more modern car designed/programmed for ethanol in the gas might do better on E10 than my couch.
My dad has an Impala with the 3800. I'll have to get him to run 100% gas in it.
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