Rear Diff Cover Replacement?

[wrc3]

Two quick questions.

First do I use sealant around the diff cover gasket? If so, can someone recommend a sealant type that has worked for them.

Second, Any recommend type of Fluid that goes in the rear diff? Can I use synthetics?

Thanks for any and all help.

B

 

[Dave L.]

I personally would use a little permatex #2 to hold the gasket in place when installing. Fluid replacement would consist of GM# 1052271 (qty 2) and 1052358 (qty 1).

Dave

 

[cntrhub]

I just changed my diff fluid and made sure the cover and housing were free of any hint of old gasket material. I dried the case and cover with brake clean and installed a genuine factory gasket "WITHOUT" a dab of any liquid out of a tube or tin. I placed two bolts in the cover and then put the gasket against the cover and over the two bolts. I then threaded the bolts in a few turns and replaced the remaining bolts, making sure I saw each paper hole line up with the cover. I never, ever use any sealent on paper gaskets.....always install dry!
It's been over a week and I park the car in the garage. Not one leak do I see on the floor, or a sweat of grit around the case from oil seepage.
You won't hurt using synthetic. Just make sure if this is an automatic with diff/slip system, you add the extra little bottle that should be used for the clutch packs in the ring housing. This additive helps the little clutches from chattering around corners.

 

[wrc3]

Gasket type

Ok I will have to look at the gasket type. My old cover was cracked at the spring and since I was going to be under there and had other things to do I am actually re-doing the entire rear end with a kit from VBP. So I am not sure what kind of gasket they sent me, but I will take a look. If it is paper I will leave it dry, if it is a FelPro or something like that I will throw some permatex on it.

Thanks again for the help.

B

 

[redvetracr]

don`t forget the "posi additive"!!