I want to go ahead and start breaking in the engine on my son's new trainer. Actually, he is driving me nuts because it is to cold to start learning to fly adn our AMA membership has not arrived so I am trying to do something! Anyway, part of the breakin for an ABC engine depends on the heat getting high enough, correct? If that is true, then is it a bad thing to try and break in the engine when it is really cold outside? It is finally January here in Ohio, and it is in the teens outside.

Thanks all for your help!