In gonna be swapping out my diff covers this weekend. It's my first time doin this. Any certain type of gear oil recommended? Any tips? Thanks

 

If im remembering correctly 75w90 is what you want unless you tow then 90w140. Im sure my numbers are wrong but I would use synthetic.

 

If you go in water or mud often just use the 75w90 Dino oil because you should be changing it often. If not maybe the synthetic would be best. The manual says the synthetic if you tow

 

extend breathers...problem solved!
....my choice with Rubi D44 and towing trailer all summer.

 

75-90 or 80-90 will do you fine.


I used standard Valvoline and it's always done me good. No extreme temps, no combustion leads me to not buy into synthetic for gears.

My biggest tip would be to be prepared to spend a lot of time scraping off the mating surface on the axle. You want that as perfect as possible. I used a razor blade, scotch pad, and Emory cloth for tough spots.

Actually, a few thousand miles ago I put a LubeLocker in my front diff cover and it has stayed nice and drip free and will save me the hassle of cleaning next time.

 

I'll probably use a wire wheel to clean surface face.

 

I just did mine two weeks ago and chose Outlaw covers with the Jeep logo. I was surprised with only 700 miles on the jeep how much filings accumulated on the magnetic drain plugs. Anyway, my point I wanted to make is that I used Amsoil synthetic and I swear the jeep coasts easier than with what came from the factory. I know it is easy to imagine things if you let yourself but I realized an instant 1 mpg more on the highway so could be a coincidence but I firmly believe in Amsoil and have used there products for many years with great results.

I also used Lubelockers with zero issues. Make sure you use the recommended torque sequence and torque settings.

 

I too use lube lockers. In fact I just pulled a cover and reused the lube locker.

Be careful of the torque you apply to the bolts and the tightening pattern.

 

I was actually thinking about getting the ARB covers and doing this myself as well. Do the new covers come with gaskets or will I need to pick up new gaskets from the dealer? Sorry I've never done this before.

 

Running any traction devices? Some need LSD additive, and some don't like synthetics.