Their is talk of 15% ethanol Gas being introduced this year; already people are talking about the harmful effects of just 10% ethanol on small engine such as weed wackers / generators, I belive RC engines will be effected by this as well.

So if you are concerned about this and would like to know of a source that has 0% ethanol, then please go here:

http://pure-gas.org/printable.jsp?nocopy=true&stateprov=LA

Also post your results to see if ethanol free gas made an improvement in performance / life of your engine.

Thanks