Differential Maintenance Suggestions? - JeepForum.com

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post #1 of 3 Old 07-21-2010, 09:15 PM Thread Starter
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2006 TJ Wrangler 
Join Date: Jul 2010
Location: pittsburgh
Posts: 12
Differential Maintenance Suggestions?

While crawling underneath the rear of the Jeep (my 06 TJ SE with ~57k miles - no lift & mostly highway driving w/ some light highway action) I noticed that my rear diff (Dana 35) seems to have oil around the gasket, in addition to the terrible rust issues.

Check the pictures

Picture 1

Picture 2

Is this something I should be concerned about? I've read through the writeup on how to service the diff's here - Jeep Axle Differential Fluid Change Service - it doesn't seem like something that would be out of my leauge, I'm just concerned about snapping off a bolt.


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post #2 of 3 Old 07-21-2010, 09:41 PM
Web Wheeler
2002 TJ Wrangler 
Join Date: Jun 2007
Location: Denton County, TX
Posts: 7,517
The rust pictured is not unusual. Just a little surface rust. You can wire brush and spray with black rattle can if it worries you.

Leak seems to be from cover, which can be fixed by changing fluid and cleaning rear cover and mating surface and resealing with rtv sealant.

denton county, tx
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post #3 of 3 Old 07-21-2010, 10:44 PM
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2003 TJ Wrangler 
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Location: Jamestown, ND
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When was the last time you changed fluids according to jeep it should be done every 24,000miles, so it's time it would be a good thing to fix. As far the cover that is normal especially if you live some where they use salt, I would just sand it down to bare metal and repaint it black when you change diff fluids. As far as the seepage that is probably do to the RTV leaking a little, once you clean, and reseal it should be fine.


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differential , maintenance , gear oil , replace , replacing , TJ

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