[Eric in the Ozarks]

Alcohol has fewer BTUs than gasoline.

[curmudgon1]

Ethanol has approximately 1/2 the heating value of gasoline.
Heating value is the number Engineers use to determine the maximum theoretical efficiency possible from a hydrocarbon fuel used in combustion.
So a mixture of 85% Ethanol and 15% gasoline would result in
a 42% reduction in efficiency or an increase of 42% fuel for the same distance.
Please report the increase in pollutants caused by this increase in Ethanol.
Since I do not report to Archer Danial Midland Corp., I feel free to discuss the truth.