Yeah that ethanol sux, it doesn't take long to turn, something about the ethanol drawing water. It realy becomes an issue running off shore, especialy in OR where 10%min is required to be sold. Make fuel out of your food, get worse mileage, and cause mechanical problems, then require it's use by law ....yeah brilliant. There are some pushes to reverse the OR law, and it isn't required to be ran in boats but it is hard to find, sold at a few marinas.