http://www.usatoday.com/story/news/nation/2012/11/30/aaa-e15-gas-harm-cars/1735793/
AAA says this is a disaster for older cars.
Even my THREE year old Tacoma says no E85.
It is bad for all engines. It is just a lot worse for the older cars, motorcycles, and small engines.
We have had many discussions threads here on FR regarding the issues 10% Ethanol creates with single cylinder engines. It is the worst in cold weather and marine environments.