This week took a hot trip to south dakota pulling my r.v. When I got to the camp site and backed my r.v into the slip I noticed I was leaking some tranny fluid in the front end of the tranny where it bolts up to the engine. It was dripping out from what looks like an inspection plate the has a bolt on each side and in the middle a small vent or slit. The next day I looked at it and it was not dripping at all. I checked the dip stick and I really havent lost enough to show up on the dip stick. I took it for a drive and checked under the truck and no drips at all. The tranny temp gauge never got over 185 degrees. The hole time I'm at camp I'm trying think why on a 400 mile trip there were no leaks and then at camp there was. Sooooooooooo I picked up 3 quarts of fluid just in case and headed back home checking the dip stick and the leak every 100 miles. NO leak. Then when I got home and backed my r.v. in the drive here comes the leak.... probably lost a good pint of fluid. Then it dawned on me thats why it leaked at the campsite............ when I was BACKING my r.v. in the site. I feel that I have it pretty well isolated as to when it will leak but dont know why it is leaking. I'm taking to the tranny shop tomorrow. I only have 60,000 on the truck and had a sprag (spelling) go out on the tranny at 30,000 which was taken care of under warranty so I really only have 30,000 on the tranny. Any thoughts from you pro's out there would certainly be comforting. My truck is an 01 7.3 automatic

 

I discovered a tranny leak when I parked on an incline, nose of the truck pointing down. Turned out to be where the dipstick tube went into the tranny. Hope that's all it is with yours.

 

Seems like I remember someone on here explaining why this happens. Maybe they will chime in again..