I bought an 8.8 inch rearend the other weekend I've been working on since. As of now the rear cover is off & I've pulled out the axles and the drum brakes. I'm going to put it back together minus the brakes soon, and I need to know if it's ok to let it sit for a while without oil, or do i need to put some in, and what kind? Also what do you use to seal the rear cover(temporarily)? I'l be posting some Q's about disc brakes, gears, etc soon.

Thanks for any help you can offer!
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85 GT many mods drag car
84 SVO auto x type car