This question is fairly generic. I am about to replace the gasket on the differential cover of my 2004 Silverado 2500HD. The gasket and the truck have 183,000 miles on them. Although the gasket has not failed yet, it seems to be showing signs that it my be getting old, so I am going to put a new one on. Should I use gasket sealer such as permatex, or put the new gasket on dry? If I need to use sealer, what type does everyone recommend?
It's called "The Right Stuff" expensive but it works.
Permatex black for your rear differential~...that's OEM for ford, and the one we used at the shop~
no paper, just one continuous bead on the cover...clean as it can be pumpkin side~
I'd check the bearings back there for wear and shims (if any) to bring it into correct mesh~
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