GreenXJ95

Do you fill the diff fluid right up to the fill hole or no?

96_xj

yes until it starts to dribble out

DocBoCook

Need to do mine, first time. What fluid should I use?

96_xj

in the owners manual it will tell you what fluid.

but i use 80w -140 (or something like that, I cant remember off the top of my head)

then if you have an lsd or basically anything but an open diff a friction modifier is used

Mgonzo700

I always use SAE 80W-90 GL5

customzj73

I always use 85-140, the heavier you use the quiter your bearings are and the longer they and your gears will last

DocBoCook

Don't have an owners manual. Where is the best place/brand? Thanks

GreenXJ95

I need to just top mine off both are low

GreenXJ95

What about transfer case I got the fluid what plug do I take out to fill?

GreenXJ95

Top plug I take it?

OEJ

sub

Bstrom650

The 8-W-140 is designated for use with the towing package - dunno if any gear parts are different than the stock diff so can't be sure using the higher viscosity is a good idea or not. I'd be a little careful in the colder climes where it might be less effective.

GreenXJ95

Do you have to use tranny fluid for transfer case?

96_xj

you use ATF for the tansfercase dextron III.

and the gears are not different the 85-140 is meant to be used for heavy applications, towing, offroad, ect. I always run it 100% of the time without issue

GreenXJ95

This is odd. Chrysler 8.25 has a rubber plug in the cover. How am I suppose to fill that rear end? I figured there was a bung to unscrew