Hi, days ago i refilled my AYC reservoir tank, after a week i'm noticed that the reservoir is empty, my mechanic checked the differential oil and noticed that the ayc oil is mixing with the rear differential oil, he says that i need to buy the oil seal retainers to solve the problem. I found some internal diagrams of my rear diff but i can't find the oil seal retainer that i need to buy.

Car 1996 Mitsubishi Lancer Evolution IV GSR.
Rear differential diagrams attached to this post.

Can you help me finding the right retainers to solve my problem?. Thanks in advance.

 

None of those diagrams are correct. In the 5th picture where it has "Ref 27-220", you need the break down of that part, which is the actual AYC unit.

 

you most probably have broken diaphragms in the AYC diff... those transfer the AYC controll oil pressure onto the plates in the diff.. I think those are not available from mitsubishi so you should best look for another diff...

 

Solved, bought a used rear diff and works fine.

Thanks for your comments.

Best regards.