I have a 2006 LRE SE V6. I noticed a leak on the rear differential. Looks like the right side seal.

a)What kind of gear oil Should I use? Our English engineers say SAF X0. What is that in SAE?
b)Can the seal be found in an aftermarket brand?
c)Is there any special instruction for the removal of the axel?

I will appreciate any help on the topic.

 

The diff seal itself is not expensive the diff oil we use squeeze bottles from parts so ill have to ask them or find an old bottle on one of the benches. This is not easy job on the ground and with releasing the left rear hub it can get a little hairy. Last i looked that truck is 6200 lbs wet and not a fun day at the emergency room. scott