Originally Posted by
JammedStab
I'm not sure. In the cold season, I always overnighted in locations where the engines were plugged in with blankets wrapped around the engines to keep them warm. Only tried to hold a prop once on start and it seemed like it would be difficult to do so for very long with the engine spooled up to idle.
Lots of places you don't overnight, but 4 hrs at-40 will suck the temps out of even a wrapped engine. As long as the flow dividers didn't freeze-30ish it would start. Otherwise it would start but not accelerate past 30-35percent