Long write up but I’m trying to give as much info as possible. I recently went on a 1600 mile round trip and during that trip I looked over the truck while getting fuel and noticed ATF slung all
over the bottom of my truck. It was at the output of the transfer case where the rear driveshaft goes in. It was slung right around where the u joint is. I immediately thought it was the seal so after I got home I replaced the seal. I just looked today after a 30 minute highway trip and there was some ATF on the bottom of the truck in the same area! But the boot where the driveshaft slides in is completely dry and the transfer case all over the top and all around is dry. I then thought that maybe it could be the “cap” on the yoke that is pressed in but I stuck my finger on the yoke and u joint and it is all completely dry. Where the hell is it coming from? I wiped it off with a shop towel and there wasn’t much on the towel. Could this be some residual fluid from the original leak? I kinda doubt it. I know the vent is towards the front on the drivers side and the hose runs forward somewhere and is nowhere close to where the fluid is. It’s completely dry as well. The rubber boot looks wet in the photo but it is completely dry. I need some help please, I’m stumped.