Hyundai i40 2015 1.7 diesel service and maintenance

Engine oil

Engine oil capacity: 5.7 litres (6 quarts)
Oil change interval is 15,000 km or one year, whichever comes first.
Recommended oil type (Oil Viscosity Classification SAE) is 0W-30, 5W-30

Air filter

Air filter change interval is 15,000 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.

Timing chain

There is no manufacturer specified replacement interval for the engine timing chain on Hyundai i40 2015 1.7 diesel, expecting it to last until the engine is overhauled.
Based on real life experience, the Hyundai i40 2015 1.7 CRDI timing chain change interval is approximately 200,000 km as at this mileage it may become overstretched and require replacement, so it is recommended to check the condition of the chain periodically after this mileage is reached and replace the timing chain if it becomes excessively stretched or if unusual engine noises occur.

Serpentine (drive) belt

Hyundai i40 2015 1.7 CRDI serpentine or alternator belt replacement interval is 90,000 km.

Engine coolant

Engine coolant (antifreeze) recommended replacement interval for Hyundai i40 1.7 diesel is 90,000 km or 5 years, whichever comes first.