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Sammy91683 12-09-2011 04:10 PM

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.

Dextreme 12-09-2011 04:31 PM

What type of advice are you looking for? Fluid Brands/types? Plug locations? Fluid Capacities?

Do you have a manual or auto tranny?

98SaharaTJ 12-09-2011 04:50 PM

heres a great write up for the differential

Differential Service

Sammy91683 12-09-2011 04:56 PM

All of the above haha
I have an automatic

98SaharaTJ 12-09-2011 05:07 PM

Jeep NV3550 Transmission & NP231 Transfer Case Service

the 3rd write up on that page is for the transfer case

Sammy91683 12-09-2011 05:19 PM

I got my transmission serviced, do you think that they did the transfer case?

4Jeepn 12-09-2011 05:21 PM


Originally Posted by Sammy91683 (Post 1813908)
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?

98SaharaTJ 12-09-2011 05:24 PM

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...

Sammy91683 12-09-2011 05:24 PM

They dropped the pan, did a complete service, and repaired the cooling lines

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