Hey everyone-

Could I get some suggestions on airplane fuel for my OS 40 LA? This engine is on a Hobbico Avistar, BTW. I have been running 5% four-stroke fuel (my engines a 2 stroke) for about a year and nothing happened to it. Then, one of our club members suggested to use 10% or 15% and another guy suggested 20% and one other guy said Cool Power (33%) is cool. All I understand is the more nitro, the faster the airplane burns fuel. Cost is no problem, I would just like to know what is the best type of fuel. Also, here in central california, the weather is about 100 degrees (f) during the summer and about 65 degrees (f) during the winter. Thanks for the help.

IBrakeForNobody