Good thread on A8 Transmission Seal Failure on

[Kev the Brit]

>After reading about all of these transmission failures, it appears the
>reason why they fail is due to the final drive seal failing.
If we are talking about the output shaft from the rear of the box to the
rear axle, then this also fails on the 100/A6q

>Be careful when inspecting, because it's above a cat, and if it's leaking,
>it can drip on the cat and then just burn off, so you won't see puddeling
>under the car.
Mine was stinky. You could see where fluid was running around the cat but
hardly ever made it to become a drip. I have since noted that 90% with that
box have some degree of leakage.

>If you have any leakage, it's time to replace it, if not, it seems most
fail
>between 70K and 125K. I plan on inspecting mine soon, and replacing it
>sometime this spring or summer, my car has 60K on it now.
Had to do mine at 60K. I did it myself, not sure I would recommend it to
anyone else though. I was quoted $250 from the dealer. I had lost half of
the fluid from the final drive, not sure if this drains the main gearbox or
not though.

Kevin Phillips   AIM quattrohead
Western Massachusetts
1995 900 SET 119,000m
1998 A6 Avant 63,000m
Cell 413 519 9034



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