Toyota Corolla 2003 1.8 petrol service and maintenance

Engine oil

Engine oil capacity: 4.2 litres (4.4 quarts)
For regular oil change Toyota Corolla 2003 1.8 petrol takes approx. 3.7 litres of oil, 4.2 litres is total engine oil capacity.
Oil change interval is 10,000 km or one year, whichever comes first.
Recommended oil type (Oil Viscosity Classification SAE) is 5W-20, 5W-30

Air filter

Air filter change interval 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.

Fuel filter

Toyota Corolla 1.8 petrol fuel filter change interval is 40,000 km

Spark plugs

Replacement interval for spark plugs is 20,000 km.

Timing chain

There is no manufacturer specified replacement interval for the engine timing chain on Toyota Corolla 2003 1.8 petrol, expecting it to last until the engine is overhauled.
Based on real life experience, the Toyota Corolla 2003 1.8i 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.

Serpentine (drive) belt

Toyota Corolla 2003 1.8i serpentine or alternator belt replacement interval is 100,000 km.

Engine coolant

Engine coolant (antifreeze) recommended replacement interval for Toyota Corolla 1.8 petrol is 60,000 km or 3 years, whichever comes first.