Toyota Hilux 2004 3.0 diesel service and maintenance

Engine oil

Engine oil capacity: 7 litres (7.4 quarts)
Oil change interval is 10,000 km or one year, whichever comes first.
Recommended oil type (Oil Viscosity Classification SAE) is 5W-30

Fuel filter

Toyota Hilux 3.0 diesel fuel filter change interval is 20,000 km

Timing belt

Manufacturers recommended timing belt replacement interval for Toyota Hilux 3.0 diesel is 150,000 km.
Based on practical experience, recommended Toyota Hilux 2004 Double Cab 3.0 D-4D 4WD timing belt change interval is 120,000 km when belt should be replaced, or at least periodically check the belt's condition after this mileage and replace it at the first sign of damage.
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.

Engine coolant

Engine coolant (antifreeze) recommended replacement interval for Toyota Hilux 3.0 diesel is 80,000 km.