Question is how big the leaks are. Is it just moist or do you have oil drops forming?
If it is just slight moisture it could be years until it starts really leaking. Output seals are from transfer box and diff so not directly linked to how gearbox is behaving. I did replace rear output seal this year. Front seals are a bit moist but I am not going to bother about them until they start really leaking.
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Currently 8less
2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D
8 history:
2006 A8 Sport 4.2TDI quattro SOLD,
1997 S8, reached end of life with gearbox failure
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