Citroen C4 2010 1.6 diesel service and maintenance

Engine oil

Engine oil capacity: 4.3 litres (4.5 quarts)
Recommended oil type (Oil Viscosity Classification SAE) is 5W-30, 5W-40

Timing belt

Manufacturers recommended timing belt replacement interval for Citroen C4 1.6 diesel is 240,000 km.
Based on practical experience, recommended Citroen C4 2010 1.6 HDi timing belt change interval is 180,000 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.