- Normal Operating Conditions: Change oil every 10,000 miles or 1 year, whichever comes first.
- Severe Operating Conditions: Change oil every 5,000 miles or 6 months, whichever comes first.
For Diesel Engines:
- Normal Operating Conditions: Change oil every 10,000 miles or 1 year, whichever comes first.
- Severe Operating Conditions: Change oil every 5,000 miles or 6 months, whichever comes first.
_Severe Operating Conditions Include:
- Frequent short-distance trips (less than 5 miles)
- Excessive idling
- Driving in dusty or dirty conditions
- Towing or hauling heavy loads
- Racing or performance driving_
Important Note: It's always a good idea to consult your Audi A6 2003 owner's manual for the most accurate and up-to-date oil change intervals specific to your vehicle.