Rear Diff. Cover

Changing the gear oil in the rear end. I have a Fel-pro gasket. Can I get away with just the gasket or do you guys put sealant too? What do you guys think?

On my 4x4 dakota i did front and rear axles with gasket sealer...orange only. 10k no leaks.

Gaskets almost always end up seeping and collecting dust on the parts.
I also use red RTV only. (used to be called orange but they changed it to red)
Clean both surfaces and put a 1/8 or so bead all the way around the diff staying inside the bolt holes and slap the cover on immediately and bolt her down.
It can even be filled right away.
Works every time and ZERO leaks or seeping.