Agree, use commercially available fuel. I have engines that I have been running 25+ years. I do however dissagree with the statement that you shouldn't leave fuel in the engine after running. I have never run an engine dry after a day of flying. The nitro in the fuel evaporates almost immediately, and all that is left is oil. It protects the engine. My friends that burn it out after are always replacing bearings. I got one of them to stop running out the fuel afterwards, and he hasn't lost a bearing since.

I like 15% nitro, 20% oil fuel myself, and usually use a castor synthetic mix. Have used just about every brand of fuel and many different mixes. The last order I placed was 100 gallons of Red Max. Byron was good, cool power was good, and many others. As long as the oil is 16 to 20% and its not old, it will do fine.

I tend to stay away from peoples home brew fuel. I never saw the point to it. The guys here using it were the ones flying junk planes and wrecking just about every flight. Their engines never last long enough to worry about.

FHS has great deal on Red Max if you buy in quantity. Look them up on google, get a bunch of friends together and get a big order. It beats paying the high prices you see at a lot of hobby shops. Our hobby shop is over $20 a gallon. I won't pay it. I get it at the shop in Kalispell if I am there and need it. They are usually pretty fair on price.