I have been pondering on what to do about a tranny vent for a week now. I thought today, that if a fella siliconed up the inspection cover and in the little groove in the bottom ran a small vaccum line out of there and up to a high and dry spot inside the engine compartment he would have a much more water proof rig. Does that sound like a good idea? I want some feedback before I do this, but everytime I drive my truck through deep water I get real nervous about water entering the tranny through that little hole and ruining it. I can't see why it wouldn't work, as long as the tranny has some way to intake and expell air albeit a very little bit at a time. That's why I don't think it would take much of a tube to do the job. Any help is appreciated....