Toyota Highlander 2013 3.5 petrol service and maintenance

Engine oil

Engine oil capacity: 7.2 litres (7.6 quarts)
Recommended oil type (Oil Viscosity Classification SAE) is 5W-20, 5W-30

Timing chain

There is no manufacturer specified replacement interval for the engine timing chain on Toyota Highlander 2013 3.5 petrol, expecting it to last until the engine is overhauled.
Based on real life experience, the Toyota Highlander 2013 3.5 V6 timing chain change interval is approximately 300,000 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.