Leon wrote:
Consider me a source. When I use fuels with up to 10% alcohol I typically
get in excess of a 10% drop in gas mileage.

Alcohol does not have the specific energy on a volume basis of gasoline,
true. That's not the same thing at all as a net negative energy balance.

If it work out better I would admit it, from my stand point alcohol is
simply a filler that burns but does not contribute.

If it "burns" it contributes...there's that doggone thermodynamics stuff
again for ya'...

....