Jeep JK Wrangler Differential Fluid Change Write-Up
10-16-2010, 05:50 PM
#111
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This is getting confusing 
Im trying to figure out which oil grade i should use. I have dana 44's with e-lockers. The manual says 80W90 or 75W140 for towing, and mentions an additive but i didnt understand when it should be used. The manual is just unclear. I called the dealership, and obviously the guy didnt know either. I see some of you guys using 75W90, any specific reasons?
So my understanding so far is I need 80W90, synthetic or not? additive or not?
thanx for you input
Im trying to figure out which oil grade i should use. I have dana 44's with e-lockers. The manual says 80W90 or 75W140 for towing, and mentions an additive but i didnt understand when it should be used. The manual is just unclear. I called the dealership, and obviously the guy didnt know either. I see some of you guys using 75W90, any specific reasons?So my understanding so far is I need 80W90, synthetic or not? additive or not?
thanx for you input
The additive is for limited slip differentials, not e-lockers.
11-29-2010, 10:30 AM
#112
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I changed mine for the 1st time on Saturday (2010 Sport Unlimited w/ 15K miles). The orginal oil in the rear dif was jet black? Is that normal for the 1st 15k miles?
11-30-2010, 05:57 AM
#113
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OK guys dumb question here: I just have a plain ol unlimited X. What fluid should I be using? Mainly just highway driving. 3:73 gears. Going to tackle this project this weekend. Thanks and don't hammer me too hard with the question. I just want to hear from the experts. 
11-30-2010, 08:24 PM
#116
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OK guys dumb question here: I just have a plain ol unlimited X. What fluid should I be using? Mainly just highway driving. 3:73 gears. Going to tackle this project this weekend. Thanks and don't hammer me too hard with the question. I just want to hear from the experts.
12-01-2010, 05:15 AM
#117
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01-02-2011, 09:54 AM
#119
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Thanks for the writeup. When I saw this, I choked a bit as the dealership charged me 200 dollars to do this. They told me it was 'special' gear oil. What a scam!!
02-11-2011, 04:20 AM
#120
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In the write-up it states to add 1.375 quarts if you drained the front diff using the drain plug and 2 quarts if you removed the cover and did a thorough drain and replaced the cover with a SOLID cover. How much fluid is required if you do a thorough drain on the rear and replace with a SOLID cover?