I have run a .12 on 40% nitro 8% oil content in cold weather around 30-35 f and have run over 3 gallons through the little thing and have not had it wear out. It's dynamite .12 not like it's a high quality motor. If I only got 1 1/2 gallons through a motor I'd have to kick my own butt for not doing something right. The cold weather thing is always been a debate, as far as I'm concerned tune it, run it, and keep a eye on the temp and smoke you should be ok. Thats just my thought.