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Old 12-09-2011, 04:10 PM   #1
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Changing Differential/Transfer Case Fluid

I have 120,000 on my 98. I have no idea as to what the P.O. did to it maintenance-wise. I've put about 12k miles on the car in the past year and a half.
I figured that I might as well change the differential/transfer case fluids since I recently discovered the stock radiator hoses were still in the jeep and the tranny fluid was VERY dirty. That was a huge tip off that she didn't do much to it.

Any advice? I haven't ever done this before.

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Old 12-09-2011, 04:31 PM   #2
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What type of advice are you looking for? Fluid Brands/types? Plug locations? Fluid Capacities?

Do you have a manual or auto tranny?

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Old 12-09-2011, 04:50 PM   #3
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heres a great write up for the differential

Differential Service
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Old 12-09-2011, 04:56 PM   #4
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All of the above haha
I have an automatic
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Old 12-09-2011, 05:07 PM   #5
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Jeep NV3550 Transmission & NP231 Transfer Case Service

the 3rd write up on that page is for the transfer case
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Old 12-09-2011, 05:19 PM   #6
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Thanks.
I got my transmission serviced, do you think that they did the transfer case?
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Old 12-09-2011, 05:21 PM   #7
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Quote:
Originally Posted by Sammy91683 View Post
Thanks.
I got my transmission serviced, do you think that they did the transfer case?
Did you have them drop the pan and replace the filter or just flush it?
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Old 12-09-2011, 05:24 PM   #8
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I just about always do my own work so im unsure what they would do, but I would say no they didn't. Could be wrong though...
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Old 12-09-2011, 05:24 PM   #9
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They dropped the pan, did a complete service, and repaired the cooling lines

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