step 1: remove housing assembly from car
step 2: drain
step 3: refill with 75w-150 and limited slip additive
step 4: reinstall housing assembly
if you're really slick you could drill and tap the housing for a drain plug while you have it on the work bench.
change your fuel filter while you have the housing out.
Why change it?
ok, but what do yo gyus think about about siphon it out
With the diff in the car, up high on jack stands.
I cut open an antifreeze jug,
put my drill inside it(to protect it from the drippings),
and drilled a hole into the jug,
then drilled up into the bottom of the diff hsng.
After it was done draining, I drilled it to the bigger size I needed and tapped it for the drain plug I selected.
I then sprayed about 2 cans of brake clean(at the same time) into the fill hole, to flush out any Aluminum left in there from drilling and tapping.
Teflon tape on the plug and done.
Now my yearly fluid changes are cake.:beer:
It is a lot of work, but a good time investment with the other things you can get at like mentioned above. I found a bad carrier bearing; yeah it sucks, but the time worth taking it down can help find other problems that need addressed.