A4 Quattro Wagon L4-1.8L Turbo (ATW) (2000)
c. Connect the oil lines from the external oil filter assembly to oil filter adapter.
d. Insert a new oil filter element on the canister of the external oil filter assembly.
e. Partially fill (approximately 1 quart) the canister of the external oil filter assembly with the engine cleaner. Do not overfill.
f. Attach the filled canister to the external oil filter assembly and tighten securely.