Originally Posted by
misd-agin
“Takeoff as as soon as the oil temperature is within limits”? Please don’t follow that advice. The manufacturers would say that if it was acceptable. The oil temperature is typically within limits by the time the engine reaches idle. The most it takes is until you do the flight control check. Both are much shorter than the 5 (reduce able to 3) minute limitation.
Agreed - I can't speak for all installations, but I know of several engine installations where the min oil temp is based on the ability of the oil to 'deice' the fuel (via the fuel/oil heat exchanger). It has nothing to do with the engine being 'warm'.