There is a wealth of information out there regarding S-Tronic oil/filter changes - but it's all a bit contradictory.
My car has covered 145k and has a full Audi history and it's due a gearbox oil change:
The manual shows 38k intervals for oil/filter change. Having done a little research I believe my car has separate oils for the clutch units and the geartrain. Does the service interval relate to the geartrain oil or the clutch oil? I'm assuming both oil types will need changing at some point so the following info would help:
ATF oil spec/part number.
ATF filter part number.
Geartrain oil spec/part number.
Geartrain oil filter part number.
Many thanks,
Simon
09/2014 A6 Avant TDI2.0 R4140 A7 (CNHA engine code)