Lexus CT 2011 1.8 petrol service and maintenance

Engine oil

Engine oil capacity: 4.2 litres (4.4 quarts)
Recommended oil type (Oil Viscosity Classification SAE) is 5W-20

Air filter

Replacement interval for the air filter is 40,000 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.

Spark plugs

Recommended spark plugs change interval is 100,000 km.
Lexus CT 2011 1.8 petrol spark plugs: 9091901275

Timing chain

There is no manufacturer specified replacement interval for the engine timing chain on Lexus CT 2011 1.8 petrol, expecting it to last until the engine is overhauled (approximately 270,000 km - 450,000 km).
Based on real life experience, the Lexus CT 2011 1.8 16V timing chain change interval is approximately 150,000 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.