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?

- 95 Mystique LS - Zetec/5spd - 99 Contour SeVT Sport - Duratec/5spd Official NE-CEG Contour/Mustang Family