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-   -   Black Diff Fluid and Shavings? (http://www.wranglerforum.com/f274/black-diff-fluid-and-shavings-257825.html)

thinkxingu 07-23-2013 02:14 PM

Black Diff Fluid and Shavings?
 
Hey All,
Was getting a little clunk when pulling away, Jeep tech checked all suspension components in back and, eventually, the rear diff. He showed me that the fluid was black with some metallic shavings and is now going forward with a warranty request to pull the cover and check out the internals. He said he checked my VIN and it should have posi, which means clutch plates and other potential problems.

Sound legit? Thoughts? It's a 2010 with 36k. Since I don't offroad or tow, I haven't yet changed the diff fluid.

DFW6ER 07-23-2013 02:52 PM

It can happen. The rear diff does all the work when in 2WD, so it gets used. Probably a manufacturer defect. Glad to hear it's being covered under warranty

thinkxingu 07-23-2013 03:31 PM

He also said something about both tires should move forward at the same time as opposed to one spinning backward. That's posi, right?

thinkxingu 07-24-2013 02:01 PM

Carrier bearing's shot (one or many?).
Thanks, all (somewhat sarcastically)!

jadmt 07-24-2013 02:13 PM

Quote:

Originally Posted by thinkxingu (Post 3994719)
He also said something about both tires should move forward at the same time as opposed to one spinning backward. That's posi, right?

correct when up on the lift. It is common for lsd clutch plates to wear they live a tough life.

Lusus_Naturae 07-25-2013 01:57 AM

Good to have them replaced now under warranty - it's also one reason people give them a bad name, because they do wear down. Yours sound like a defect though. I bought my JKU with LSD, even though open wouldn't have bothered me either. I expect they will die before 100k though from wear alone.

legitposter 07-25-2013 08:21 PM

Wait a minute... are you suggesting Chrysler actually warrantied something? Oh man, your dealer's service manager won't be sleeping tonight!

thinkxingu 07-26-2013 08:08 AM

Quote:

Originally Posted by legitposter (Post 4003608)
Wait a minute... are you suggesting Chrysler actually warrantied something? Oh man, your dealer's service manager won't be sleeping tonight!

Crazy, right?!


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