This is applicable for the rear end, transmission pan (if not using a gasket), I guess even for installing an intake. Currently, doing the 200,000 mile maintenance on my truck, and using RTV on rear differential and transmission pan. On pan now, I have followed directions on RTV (1/4" bead, tighten finger tight til squeeze out the sides a bit, wait one hour, tighten another 1/4-1/2 turn). So, now, how long before it is safe to refill the transmission? RTV package says "dries in 1 hour, fully cured in 24 hours". So, is it safe after one hour? Also, it is only 50-55 degrees in the garage, so what is the answer for a typical day, and how much more time should I wait in this cooler temperature?