Diff Cover Liquid Gasket Question

[Carder09]

Just changed the rear diff gear oil today and man was it completely black, smelled horrible too. I don't think it has ever been changed before unless they picked up a gasket from the dealership cause I couldn't find one at the auto parts store. I have used RTV before on valve covers and such but this was the first for the diff cover. Now my main concern is that I was recommended Form-a-gasket 2, it is non hardening and that concerns me. I looked at the package and it says for oil pans, tranny pans, etc but I just want to make sure this was the correct stuff and I'm not spending an extra $40 or so for the gear lube, royal purple, any thoughts or concerns?

[brainpause]

Diff gaskets aren't that hard to find normally. I just use the gaskets and just not worry about it.

[jwhjr]

I used no gasket and the Permatex Ultra Grey. No leaks and its been a few years.

[kstruckcountry]

You can find reusable gaskets, that's what I'm planning on doing next time I change gear oil.

[Carder09]

So far its held up with zero leaks so I'm not too worried. Will check in intervals on my 17 hour journey to Texas.