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Oil coming out of Breeder at T case

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Old Feb 12, 2026 | 09:47 AM
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canada's Avatar
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From: montreal
Question Oil coming out of Breeder at T case

Hi , I saw oil dripping out of breeder at t case , I just bought the car . It came with no AWC pump in trunk , so I did put it . I also did change Transmission Oil . It is the dual cluth SST trransmission . So now , I see dark-brownish oil coming out of breeder tube at transfer case , but I do also needed to put like 3 QT in AWC pump and still , after 10 minutes ride , need to be filled (reservoir) in trunk . But It would be like kind of more red oil than dark brown black oil if it would be mixing in T case ... I drained T case and yet oil seems to be really dark and liquid ...

I wonder if Transmission oil is mixing with T case , I saw one post like that . But why AWC reservoir always empty also ?

leak from undercar
leak from undercar
camera view to see breeder bleeding
camera view to see breeder bleeding
oil from T case
oil from T case
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Old Feb 12, 2026 | 11:31 AM
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Yes. The seals inside the tcase seems to be compromised. I had this similar issue. I have a SST as well.

you will need to get the tcase rebuilt or get a used one.

If The internal seal inside the tcase is compromised. The tcase fluid will mix with the ayc fluid, resulting in the overflow.

for a quick remedy I disconnected the ayc by removing the fuse. I flushed my tcase and refilled. I drove like this for a few weeks until my tcase arrived.

Hope this helps. Let us know what you find.
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Old Feb 17, 2026 | 06:59 AM
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Breather - Breeding happens on OF.

Breather - Breeding happens on OF.
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Old Feb 24, 2026 | 06:26 AM
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From: montreal

Thanks for sharing . Now , I have opened the T case and found out that the visco coupler seals are done , like you said . But , I cannot find where to buy those seals or rebuild kit . ? do you have any clue ? Dealer doesnt sell them , I dont find on line ,,,

Last edited by canada; Feb 24, 2026 at 06:31 AM. Reason: add a photo
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Old Feb 24, 2026 | 06:32 AM
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hahaha , yep
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Old Feb 24, 2026 | 07:14 AM
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I think jacks or shep sells a seal kit for the tcase.

give them a call or email
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Old Feb 24, 2026 | 09:24 AM
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Yea, jacks, shep, or TRE should be able to help you out.
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Old Feb 25, 2026 | 05:30 AM
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who is Jacks or shep or TRE ? where I could find them ?
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Old Feb 25, 2026 | 06:16 AM
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https://www.jackstransmissions.com

https://www.sheptrans.com
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Old Feb 25, 2026 | 08:23 AM
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I buy all those from stmtuned.com. i actually have plenty lol. I still use RTV on these seals
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