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Old 02-20-2016, 06:08 PM
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Metal slivers on Diff drain plug when changing oil

So doing the very first diff oil change, about 30K miles, front and rear, i found about 4 slivers besides the normal sludge. We are talking 1/8" long, paper thin slivers.
How large can they be before I should be worried.
There have been no sound changes in the whole time have owned it.
Also, I know there has never been a shock load put on the drive train, so not sure if the gears have anything to shed from manufacturing, or if this is something the dealership should look at and would replace under warranty if needed.

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Old 02-20-2016, 06:10 PM   #2
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Slivers are fine. Probably been like that since the break in period. Chunks I'd be worried about. No need to take it into the dealer. Everything is fine.

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Old 02-20-2016, 06:37 PM
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I just added a photo. Now that I can see it more clearly, it most likely looks like the end of a couple straight gear teeth. Again, they are only maybe 3/16" of an inch on the longest one.
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Old 02-20-2016, 06:42 PM   #4
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I can see why your concerned, I can't get a real good feel on the size of those. But those look more like chunks than slivers to me. Your probably still ok if it's not making sounds.
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Old 02-20-2016, 08:54 PM   #5
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When I serviced my diffs the only thing I saw were fine metal slivers, nothing like what you posted. If I drained my diffs and saw that I would have removed the cover, cleaned the gears with Brakleen and inspected them for damage. I'm not saying that there's a serious issue, only that I would have further investigated it. The only way you can be sure that there isn't a problem is to open it up and inspect it. At least then you'll know if what you found was just from the initial manufacturing process or possibly a more serious issue.
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Old 02-20-2016, 08:58 PM   #6
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Nothing that size should come out of any gear system during a service. Looks like broken gear teeth to me (edge chips). The system may still have a long life but it is under warranty. I would not accept that sort of thing on a new system.
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Old 02-21-2016, 08:35 AM   #7
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I changed my gear oil several times on my jeep and I have not seen anything that large, only thin metal slivers. I think it's worth taking a look at your gears or have dealer do to be on the safe side.
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Old 03-29-2016, 05:28 PM
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Update. Finally the dealership was able to get me in. Nearly four weeks before an opening was available. I just received a call from them and they are replacing ALL the gears. Ring & Pinion, and spiders. Luckily no hassle over warranty.
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Old 03-29-2016, 06:54 PM   #9
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My rear spider gears on my 2014 left the same size chunks on my drain plug. Only had 22,000 miles on it. I replaced my carrier with a Deteoit Truetrac after that.

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