Well, I saw oily dirt on the rear of my passenger side rear brakes and on the inside of the rim. Also saw a slight bit on the front of the diff where the driveshaft enters the diff. Before started down the new seals road I researched this site and someone had said to check the breather tube for a plug. Daggone mud daubers had been at it and plugged the tube where the little 120 degree fitting at the end of the tube was located.

I took the tube off and blew it out. I cleaned the areas of oil stain/dirt and have been watching since. This "leak" occurred after our first trip carrying our new camper. Today I pulled the diff plug and checked/filled it with fluid. It took maybe 2-3 ounces. I had the fluid replaced at 120,000, it's at 150,000 now. I guess watching is the best thing to do now. Until more fluid shows I'm inclined to leave it alone. It's got good fluid and additive, so I'm not worried about it going dry -- yet. Interestingly, there was no leak evident on the side of the vent tube (driver's side).

Would pressure/heat expansion force fluid out of these seals?

 

Yep.

.

 

Very likely you fixed it.
Just keep an eye on it for a while to be sure.



Sean <BR>

6.0L Tech Folder