Dilution of engine oil on a gasoline engine

If a very rich mixture enters the cylinders, if the engine is rarely or never forced to full power, or if the engine is often driven cold (city trips), the result is incomplete combustion. Carbon deposits, oil carbonization products and other products, unburned fuel itself and moisture condensate lead to the formation of a suspension, sour) and asphalt. Unburned fuel hits the cold cylinder walls and flows into the boat, washing away the oil film from the cylinders and pistons. The consequence of this is insufficient lubrication of the working surfaces of the pistons and oil dilution, which, depending on the fuel content, affects the lubricating properties of engine oil.

If the dilution is too great, an early oil change may be necessary. Since when driving hard (hot engine) the proportion of gasoline in the oil will evaporate, it should be especially in winter (frequent cold starts - an increased proportion of gasoline in oil) check the oil level more often.