I'm at 90k and going strong! Answer 2... Audi's are high performance cars that require regular maintenance. They will fall apart quickly if you let the maintenance go, but will last 30 years or 300,000 miles if you repair or replace faithfully.
if you are running the car in very cold conditions then yes but if the ambient temperature is above 50F degrees then I would not as it might not offer enough protection to your moving parts.
The 2002 Audi A6 has 30 valves.
The 2003 Audi A6 has 30 valves.
The 2002 Audi S4 has 30 valves.
The 2001 Audi A6 has 30 valves.
The 2004 Audi A6 has 30 valves.
The 2001 Audi S4 has 30 valves.
The 2004 Audi A4 has a drag coefficient of .30 Cd.
The 2005 Audi A4 has a drag coefficient of .30 Cd.
The 2005 Audi S4 has a drag coefficient of .30 Cd.
The 2004 Audi S4 has a drag coefficient of .30 Cd.