I know, I know.
Last oil change I noticed a bit of oil behind the oil filter. Popped the little bellhousing plug and it is wet inside.
Has to be the rear main. 35,000 miles and Moble 1 oil.
Does not leak bad enough to spot the driveway so it can wait.
Wait until the tranny needs work-----
Too early in the morning, I can not think of anything close to being clever . Sorry
2002 GMC 1/2 ton Sierra,4WD, Xct cab, camed, mid-length headers, Nelson tune, electric rad. fan, trany cooler, Heavy 5750 lbs with topper.