I have a 1996 F250 4X4 with an automatic Trans. I was backing up hill a piece of heavy equipment at a very slow pace. The transmission started puking fluid from where appeared to be the top of the transmission. I have heard that these transmissions had over-heating issues when stressed with heavy conditions. Has anyone else heard that and would it boil out a vent tube or something like that if it got to hot? Any ideas guys? Thanks.