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Unread 08-18-2014, 04:39 AM   #1
Trainhop91
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2000 XJ Cherokee 
 
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Milky diff fluid

I've been having a humming coming from the front end so I decided to open the diff and drain the fluid. When I did it was a milky white color. I'm guessing it's water? But wouldn't the water separate from the oil?

I'll be replacing the back seal as well since I noticed a some lol on the rear of the housing. Could that be how the water got in? It's a d30 on a 2000 xj. Any help would be awesome!

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Unread 08-18-2014, 08:34 AM   #2
mschi772
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It's probably water. At the high speeds and heats that those moving parts reach, the water and oil become a milky emulsion that takes a very long time to separate. Check your breather hose for a leak/hole. Pull your wheels to see if there's evidence of oil leakage at the axle seals; that could be another potential entry point.

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Unread 08-18-2014, 09:05 AM   #3
937Comanche
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Yep. I've seen it look like chocolate milk, too. If your breather tubes aren't extended now might be the time...
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Unread 08-18-2014, 11:37 AM   #4
Trainhop91
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Can't seem to find a breather tube on this thing. None anywhere around the housing?
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Unread 08-18-2014, 06:10 PM   #5
CJ7-Tim
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Kinda over there. The other end of the hose should be near the firewall.

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d30-breather.jpg

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Unread 08-18-2014, 06:12 PM   #6
Trainhop91
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Quote:
Originally Posted by CJ7-Tim
Just about there. The other end of the hose should be near the firewall. .
Thanks for the picture, I had been looking around but couldn't find it. Ended up finding it on the other side. Seems all the other pictures I see have the vent tube on the passenger side. Any reason mine would be on the driver side?
image-790601759.jpg

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