Re: E85 can I do anything to improve fuel mileage?
I'm going to leave the politics to the politicians here, but e85 has the potential to create more power in a tuned environment compared to standard gasoline. e85 has the properties of approximately 105 Octane, so if you want to compare prices then compare it to 105 which is about $8/gal out here.
Since Ethanol is Alcohol based it has natural cleaning and cooling capacities, the same reason drag cars use alcohol or meth injection. Even NOS injection - creates more oxygen in the system and has natural cooling properties.
Since the fuel is 105 octane it has less chance of predetonation meaning you can run a more advanced timing map given the same fuel.
So we're not saying that e85 will give you advantages by just putting it into your vehicle. But if you have the ability (currently we do not) to boost or tune your vehicle, e85 becomes the obvious choice. Most basic tunes for our motor require the use of 91 octane so already the price differential becomes significant for e85. Once you boost or run highly aggressive timing maps you'll need higher octanes and thus e85 is the only choice unless you enjoy paying $8/gallon.
So yes, for a stock vehicle I wouldn't vote for e85 unless the price is more than 25% cheaper. But once you start tuning, e85 is obvious.
the more you learn, the more you discover how little you actually know