Here in PA the EPA has entered the advertisement business with their "Big-Oil/Bad-Oil commercials. So I assume 15% ethanol oil can't be far behind. I don't know how it'll affect the majority of the autos on the road. My 2007 Pontiac Grand Prix GT states on page 338 that I need to use fuel with an octane of at least 91 octane and absolutely no fuel that has a higher percentage of ethanol above 10%. And to never use Methanol blended fuels. Don't know your thoughts on the subject, I'm not in favor of using corn as a source of sugar or alcohol, considering we're already subsidizing farms & their major global companies. I have a friend from Ecuador, he has told me that almost all of the cars and trucks down there are Japanese and they use E85 but that all the vehicles have stainless -steel fuel systems. But they have a zillion miles of sugarcane to use and they sell gasoline by the liter and it only cost about $2.75 a liter. I have been told by a lot of folks besides myself that the higher ethanol amounts will cause corrosion in the fuel system which is why they market some cars & trucks as "Flex-Fuel" vehicles. I think that's the sad part. We don't make cars & Trucks anymore. We make vehicles now !