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Hey, everyone!

I've done research on the Forum to get answers to as many questions as I could, but...I still have a few.

I'm doing some service to the truck next week - oil/filter change (with filter relocation kit install), AT/xfer case fluid change, and both diffs re-sealed/fluid changed (both covers are leaking). It's a 2004 XE 4x4 Off-Road (6 cyl non SC). I plan on using ROYAL PURPLE fluids for everything.

1. According to the info I've found, I have an R180 front axle and a C200 rear axle (haven't checked if it's limited slip yet). Does the "Off-Road" truck automatically have limited slip?

2. I've got a 2004 FSM, but it doesn't reference the R180 OR the C200 axle for the 6 cyl engine - it references the R200 (front) and H233 (rear). At any rate, it looks like I should use 80W-90 gear oil. I've noticed a lot of other threads stating the 75W-90 synthetic oil works fine - anyone out there have any problems using 75W-90 instead of 80W-90?

3. If I do have a LSD in the rear axle, do I need some sort of LSD additive, or is the Royal Purple gear oil fine? It looks like just the gear oil is fine; I just want to be sure.

4. How difficult is the front diff cover to get off? I've never seen a set-up like that before...then again, I've never had a CV front axle before. I found the torque specs for the cover itself and the mounting bracket that's attached to the diff cover, but...what happens to the pumpkin when I disassemble the diff cover bracket in order to remove the diff cover? I don't think it will go anywhere (it's still attached in 3 other places), but...:confused:

5. Has anyone out there used Royal Purple MAX-ATF? Their website states it's a replacement for "Matic D" fluid, but I haven't found a thread that shows anyone actually using it (for either the tranny or transfer case).

I apologize if any of these questions are repeats...

Thanks for your help!
 

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16,551 Posts
stay away from RP stuff run AMSoil much better product
 

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There is a sticker on the rear diff telling if it is a LSD,if not jack up the truck by the diff and spin a tire by hand.If both tires rotate in the same direction then it's a LSD if not then you know what the answer is NO.
 
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