The combination of methanol and nitro methane (which are totally miscible to my knowledge) should yield a freezing point significantly below –20. I wouldn’t think you would have any trouble with the fuel. Having gone to several “frozen fingers fly in’s” and I have always had much more trouble starting glow engines in general than I have had any specific problems with fuel. It is just tough to get enough heat into the glow plug in those temperatures to get the fuel burning. Luckily smaller engines have always been easier for me to start in the cold. For what it is worth, I have started my LMH below 32F but never below 0F.

Regardless, I can’t imagine flying in that temperature. When doing this I need rock solid fingers. I might as well be trying to hold a scalpel during facial surgery… How do you do this in these kinds of temperatures?

Spiro.