Quote:
Originally Posted by oil pan 4
Expect lower fuel economy.
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Yep.
Ethanol has 2/3 the energy density per gallon.
Gasohol has 10% Ethanol, expect 3% loss in MPG. E15 should be 5% MAX.
I've read studies the difference is negligible between E10-E40, but I don't have first hand experience with it.