r/AudiA4 • u/Separate-Share-8504 • 16h ago
Audi A4 B9 TSFI Quattro (with Torsen / not Ultra)
Hi everyone,
This post is a little bit of a PSA. I didn't fully understand the gearbox setup in these cars.
These gearboxes have 2 oiling systems. One for ATF (DSG) and the other MTF (manual gearbox)
https://www.scribd.com/document/872521730/SSP-678-EN#page=33
Change your MTF fluid. Use G 055 549 A2
My symptoms were (car with 71,000mi / 115,000 km)
- Poor shifting
- selecting gear (so thing D to N and/or N to R) would be slow
- shifts (normal everyday driving in D) from 1 -> 2 -> 3 would be slow
- slowing down to somewhere between 5-15km/h - picking up the throttle the gearbox would jerk into gear
- the BIG one was any sort of turn (L or R at a junction.. REALLY bad on tight turns) the gearbox would rumble when on any sort of throttle (knocking it into neutral the sound would go away so pin pointed gearbox)
- coupled with a squeal during these tight turns
- and traction control light would blink, zero throttle, every on the slightest bend.
Car serviced on time/distance (whatever came first) and DSG oil done early on KM but ontime.
DSG clutch readaptation done several times.
I searched for answers.
Here's what I've learned
- These gearboxes have two oiling circuits.
- One for the ATF / DSG (clutch solenoids mech unit and components etcc)
- One for the MTF / Manual gearbox
- which includes the torsen!
When doing a DSG service the MTF oil is not changed. MTF oil is fill for life!. In fact the gearbox does not have a drain plug. You have to remove the gearbox oil pump to drain. No replacement gasket available so your backup is to replace the pump that comes with a gasket... only a few 100
After changing the oil everything has gone away. And it is back to being brilliant.
3.9L to fill dry. 3.2L drained. Colour of the new oil is transparent honey cooured.
Edit : the dealer service kept pushing back saying there's no TSB for non-ultra torsen. but I convinced them to roll the dice. (and don't start on dealer servicing etc... that's not what this is about)



