I'm a Chevy guy, but when I see things like this I question my 'mantra'. So while I was rolling around in the gravel under the rig changing the fuel filter I noticed some oil on the inside of the drivers side rear dual. I assumed it was a leaking caliper since the oil was thin(I thought).
So I debated taking it to a shop, but common sense slapped me in the head and said.....'If you want it done now, and
reasonably right, do it yourself'. So off to HF to buy a 3/4" Earthquake Impact wrench, then to Napa for a 33mm deep socket(biggest at HF is 32mm) and a 3/4 12" extension which was ungodly expensive. About $400 total.......
I get back to my garage/shop and then realize that the wheel simulator lug nut caps are mixed, some are pull-off, others are screw off and 38mm. Well, I don't have a 38mm socket and NAPA is 45 min away, so I improvise with a big 39mm wrench and a crow bar.
Once the Simulators are off, the problem is obvious, the axle seal is leaking(it's behind these bolts)
So I did a search and the fix is Permatex.....ok, but when I pulled the axle out I find this:
I have never ever seen a gasket made from undeveloped photography film

It was transparent, and at one time I am sure not yellow. The gasket had disintegrated and caused the leak. Some times I want to just smack an engineer and say...."What were YOU thinking?"
So, I did not use any of the tools I bought at HF....taking them back? Nope