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So what does this mean?

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Old Feb 23, 2011 | 11:04 AM
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Default So what does this mean?
Went on a trail ride this past weekend so I crawl under the JK today just to check things out and find the bottom of my tank skid, (next to the rear diff.) wet with black grease or thick oil. Don't see an obvious leak or anything. Ideas?
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Old Feb 23, 2011 | 11:15 AM
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That ds joint is going bad and is slinging grease?
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Old Feb 23, 2011 | 11:15 AM
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Check your driveshaft/cv boots? They tend to tear and throw grease as they spin, especially if you just went wheeling.

nthinuf, beat me by seconds...
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Old Feb 23, 2011 | 11:15 AM
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Time for a new driveshaft?
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Old Feb 23, 2011 | 11:17 AM
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Whoa. All three of us at the same time. :weird:
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Old Feb 23, 2011 | 11:19 AM
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I win
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Old Feb 23, 2011 | 11:34 AM
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Default Maybe Driveshaft but..
Just throwing this out there but it might be undercoating rust prevention stuff
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Old Feb 23, 2011 | 11:34 AM
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That' s what I was thinking but the boot is still good and there isn't any play in the DS. Also, around the boot isn't greasy.
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Old Feb 23, 2011 | 11:45 AM
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My 1st thought was a DS boot, too, but it's good, huh. Weird. Your diff vent tube didn't come off did it? If it did your diff may have barfed up some fluid there.
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Old Feb 23, 2011 | 11:57 AM
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Originally Posted by tslewisz
My 1st thought was a DS boot, too, but it's good, huh. Weird. Your diff vent tube didn't come off did it? If it did your diff may have barfed up some fluid there.
Nope. Just double checked. Nothing else is wet and everything (boot, vent tube, ds) seem fine. Freakin' mystery! I know how this works though. The cause will eventually show up!
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