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Home >> Audi >> 2025 >> S4 Premium >> Repair and Diagnosis >> Drivelines & Axles >> Differentials & Drive Axles >> Final Drive, Differential (Rear Final Drive 0D2, 0D3, 0DB, 0B0, 0BX, 0DG, 0G2, 09R) >> 39 Final Drive, Differential >> Gear Oil >> Gear Oil, Draining And Filling >> GEAR OIL, DRAINING AND FILLING, "quattro ultra", 0B0, 09R

GEAR OIL, DRAINING AND FILLING, "quattro ultra", 0B0, 09R

Special tools and workshop equipment required 

Fig 6: Depending on the version the spacer tube from the Charging Device For Haldex Coupling 2 - Adapter 3 VAS6291/3 can line up on the housing rib on the final drive.
GWWA39-10836Courtesy of AUDI OF AMERICA, LLC

-- Grind the adapter spacer tube as shown, opposite both the side holes -arrows-.

Draining

-- Final drive 0B0: remove the gear oil check plug -1-.

Fig 7: Exploded View Of Drain And Check Plugs, "quattro ultra", 0B0
GWWA39-10863Courtesy of AUDI OF AMERICA, LLC

-- Final drive 09R: remove the gear oil check plug -1-.

Fig 8: Exploded View Of Drain And Check Plugs, "quattro ultra", 09R
GWWA39-10973Courtesy of AUDI OF AMERICA, LLC

-- Remove the drain plug -2- and drain the gear oil.

-- Then tighten the gear oil drain plug -2-.

Filling

-- Final drive 0B0: remove the gear oil check plug -1-.

Fig 9: Exploded View Of Drain And Check Plugs, "quattro ultra", 0B0
GWWA39-10863Courtesy of AUDI OF AMERICA, LLC

-- Final drive 09R: remove the gear oil check plug -1-.

Fig 10: Exploded View Of Drain And Check Plugs, "quattro ultra", 09R
GWWA39-10973Courtesy of AUDI OF AMERICA, LLC

-- Install the Adapter for Oil Filling :VAS 6291/1  or Charging Device For AWD Clutch Coupling 2 - Adapter 2 :VAS 6291/2  -1-.

Fig 11: Identifying VAS 6291/1 Or VAS 6291/3
GWWA39-10494Courtesy of AUDI OF AMERICA, LLC

-- Attach the elbow -A- to the adapter -B-.

Fig 12: Identifying Elbow With Adapter
GWWA39-10495Courtesy of AUDI OF AMERICA, LLC

-- Route the hose over the right drive axle.

-- Lower the vehicle.

-- Make sure that the valve -arrow- is closed.

Fig 13: Identifying Oil Container On Charging Device F/Haldex 2 Coup. VAS 6291
GWWN39-10140Courtesy of AUDI OF AMERICA, LLC

-- Screw the fluid container -A- onto the Charging Device for AWD Clutch Coupling 2 :VAS 6291A  .

-- Open the valve -arrow- and hold the oil container as shown.

The rear final drive will not be filled.

-- Lift the vehicle.

-- If oil leaks from the adapter -B-, set down the oil container (for example, on a tool trolley).

A portion of the excess oil runs back into the oil container.

-- If no more oil runs back, remove the Charging Device for AWD Clutch Coupling 2 :VAS 6291A  .

-- Then tighten the gear oil check plug.