gear oil

Hey guys, I’m looking to replace the diff covers on my 23 rubi xr. I can’t for the life of me find the gaskets for these, or how much gear oil to use? Owners manual just states 75w/85 GL 5. I also can’t find that anywhere. Even the dealerships don’t have any. Closest thing I can find is royal...

My Wrangler turns 1 Year old today and I'm getting ready to change Dif fluids for the first time (after a recent re-gear) and have some newbie questions: M186/open/front and M220/anti-spin/rear. The gear oil stated in the user manual is the proper gear oil for the stock 3.45 gear configuration...

My son-in-law has a JK Sahara and warned me that if I submerged my axles completely I should change my gear oil in case some water got in the breather tube. Yet on the rear gate of my JLU Sahara it shows a clear picture of the Jeep in water up to it's bumper saying you can go up to 30" deep...