Oil Consumption

Even an engine that is in good order naturally consumes some oil. This is compensated by fuel dilution, which can be up to 10% especially in gasoline engines during winter and short trips. This will make the oil level rise after which, when driving for longer, the level can quickly drop as oil thinned by gasoline is burnt and gasoline evaporates.   

Oil consumption is most increased by driving at full throttle and high revolutions with recurrent engine braking.