I don't have the documentation with me, so I thought I'd check with others.

Do I need to use a special differential fluid with ARB air lockers?

Same question, but for the Atlas II 4.3:1 transfer case. Is there a special lube, or will manual transmission fluid work ok?

What weight do I want to use in each?

Many thanks in advance! <IMG SRC="smilies/thefinger.gif" border="0">

ARB says, use what ever your manufactur says, ARB needs nothing special, but the do like the Limited slip addative

90 wt. gear oil is fine for the Arb`s, AA reccomends Torco mtf for the Atlas,but if it was me I`d run Bass Ale in the diffs, and Coors Light in the t- case

ya don't wantta run the Coor's light in the TC. Use regular Coor's, the extra weight will help in the off-camber stuff.