Mister Bear wrote:
> Has anyone checked gas mileage (MPG) in the identical vehicle using an
> ethanol blended gasoline in one fill-up, and then pure (non-ethanol) gas
> in other fill-ups? All the gas pumps in my state have an ethanol
> blend, so I don't have a chance to compare with pure gasoline. I've had
> people tell me that pure gas delivers measurably better MPG ... better
> by 10% or more. Has anyone checked one gas against the other in the
> same car? Results?
> MrBear

Ethanol has about 30% less energy in it than the same volume of
gasoline. So 10% ethanol gasoline should have about 3% less energy than
regular gasoline. And you should get about 3% less gas mileage.

Jeff