Originally posted by brapple:
wanted to clear up on point that I stated before. The back flow of coolant into the tank was when the car was hot, I had just driven in 10 miles or so on the highway.

does this still hold with the cap being bad?




No exactly when hot, the pressure also counts,
if you don't hold enough pressure (i.e. bad cap) it will go to the reservoir when the water is not "enough" hot and will boil.


1998 Contour V6 2.5L ATX