Audi A4 1997–2004 — technical service bulletin
Bulletin 0401 · NHTSA communication 10009880 · issued Aug 5, 2004
Technical service bulletin
communication type
Engine and Engine Cooling
component
1997–2004
model years
9
vehicle entries
Official summary
Engine oil specifications, oil capacity, oil filter. *tt this bulletin replaces bulletin 04-01 dated jan. 12, 2004. 2004 cabriolet, audi included. *tt
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.