Volvo S80 2003 2.4 diesel service and maintenance
Engine oil
Engine oil capacity: 6.5 litres (6.9 quarts)
Oil change interval is 15,000 km or one year, whichever comes first.
Recommended oil type (Oil Viscosity Classification SAE) is 0W-30
Air filter
Air filter change interval is 30,000 km.
After prolonged driving in particularly dusty conditions, it is advisable to check the condition of the air filter earlier and replace it if the filter is visibly dirty.
Fuel filter
Volvo S80 2.4 diesel fuel filter change interval is 30,000 km
Timing belt
Manufacturers recommended timing belt replacement interval for Volvo S80 2.4 diesel is 120,000 km.
Running your car in aggressive environments (e.g. salt, sand, etc.) causes timing belt to degrade faster and reduces its lifespan; under such conditions, the belt may need to be replaced sooner.
Serpentine (drive) belt
Volvo S80 2003 2.4 D Automatic serpentine or alternator belt replacement interval is 120,000 km.

Volvo S80 2003 2.4 D Automatic 2003 - 2005 Volvo S80 2003 technical data
Volvo S80 2003 owner reviews
Always consult your vehicle manufacturer's service manual for service intervals and specifications!