Im trying to get my truck winterized. Does not like to even attempt to turn over once the temp drop below -35. Last night I put on a oil pan heater and a tran pad heater. By some luck it turned over this morning at 51 below. I got a circulation heater to install, directions are simple connect to block drain plug, Question where in the world is the plug or where could I find detailed pic of the cooling system. Chiltion online was a waste of 20 bucks.

2004 F150 5.4