Here in Minnesota we have a state mandate for 10 percent ethanol in all gasoline. The governor is trying to get that raised to 20 percent. With 10 percent ethanol you probably would see a slight decrease in power and fuel efficiency. Ethanol just doesn't have the same energy content as gasoline. For example, I normally get roughly around 40 mpg. But on my trip to Wyoming last summer I was amazed to find I was getting around 50 mpg. I attributed that to burning pure, unadulterated gasoline that is sold in Wyoming, and the fact that I was running mostly 5th gear highway miles. I don't think ethanol has much effect on engine life.
Just my opinion,
Cody
