On 11/3/2010 10:54 AM, dpb wrote:
Steve Barker wrote:
...

The the whole point of the E is to REDUCE the amount of O (oil) we
use. And if it can be done for the same price (or less) , or even a
bit more, then why not? I burn E85 in my flex fuel vehicle every
chance I get. Yes, it does get 25% less mileage, but the cost of the
fuel is usually 20 - 30% less than the regular gas at a given time.

The problem is that w/ flex-fuel and the 10-15% blends vehicles can't be
tuned specifically for the ethanol blend. It's possible for specific
fuel to get essentially equivalent mileage but not and burn a mix...

--

I don't think an engine can be tuned to get equivalent mileage since
ethanol has less energy per unit volume than gasoline. That is the
primary reason fuel economy goes down as the % of ethanol goes up.