Have been using SIG fuel since I got my plane (4 gallons through it). I got this stuff off of my instructor. He had it from when they order fuel in January. I'm out now and the closest thing I can find is Omega. Same nitro content, same oil content, and same syn/castor ratio. Will it hurt my engine to switch brands? The manual says it will leave carbon deposits. So is it o.k. to use or not?

Fuel is SIG 10% nitro, 20% oil (50/50)

I switch brands and sometimes nitro content from time to time aside from retuning I've never had a problem and some of my engines are 20 years old

I swith a lot and Ive never had any problems either. I think youll be fine

Don't worry about it. I buy the fuels that's available at local hobby shops, and some of my engines have seen 4 or 5 brands in a year or two. Never had a problem. Of course, retuning may be required.
Dennis-

All of the major glow fuels are good. You will have to make needle adjustments as you switch, but they are all good.

Thanks guys, the truck wil be here thursday so Ill pick up a gallon or two. I know in january when my club orders fuel I'm ordering like 4 cases. They said it's 34$ a case because they buy in mass quantity. Thats why I tried to buy as much as possible when I started. They charged me $8.50 a gallon. But I could only get 4 gallons because everybody was holding on to what they had.

Morgan Omega is great fuel; the only one I'd recommend more is PowerMaster.

Omega will be fine. I use Byron's 10% sport fuel. Same concoction, works just fine for me. I like SIG too, but like others I buy from my LHS and buy what I can get. Like the Byron's though.

Mark Shuman