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Old 09-04-2014, 04:16 PM
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HP917's Avatar
Join Date: Aug 2014
Posts: 54
Fluid Change

Getting ready to change the front and rear diff, transfer case, and transmission fluids on my 2013 JKUR. Last time I used OEM fluids. I've used mobile 1 products and have loved them in my cars but haven't heard much about use in jeeps. Any suggestions on what to buy?

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Old 09-04-2014, 04:30 PM   #2
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Join Date: Oct 2013
Location: Baton Rouge, LA
Posts: 2,554
I have not changed my gear lube yet so I cannot say much about brands. But, for the differentials, make sure you use 80W-90 (GL-5) gear oil and if you have a limited slip differential, make sure that you get a gear oil that states that it is for limited slip differentials and that it has an additive in it.

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Old 09-21-2014, 06:49 PM   #3
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Join Date: Jan 2011
Posts: 454
I use Royal Purple 75-140 in the diff's since I tow a camper on a regular basis and I use Valvoline Synthetic ATF 4 in the transmission and transfer case. If you haven't done the transmission before be prepared for a messy job, with no drain plug and the back two bolts being above the crossmember it is a time consuming project. I have Rock Hard skids front to back on my 12 so that added a couple of extra hours.
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