Oil Consumption

All engines use some oil; manufacturers state what they consider acceptable. Worn piston rings, valve stem seals, turbo seals and crankcase ventilation faults increase it. Leaks also reduce the oil level but are a different problem.

Oil that reaches the combustion chamber burns with the fuel; blue smoke is a typical sign.

Check the level regularly with the dipstick or the electronic display, especially on older engines. Running with low oil can damage bearings and turbochargers quickly.