In the correct quantity, recent engine oil will higher shield in opposition to extra friction throughout chilly begins whereas providing most lubrication throughout excessive sizzling climate. Each gasoline or diesel engine can solely accommodate a prescribed quantity of oil, and pouring an excessive amount of into the crankcase will trigger the oil to foam or thicken, basically disabling the oil’s capacity to circulation in sizzling or chilly working circumstances.

If the oil cannot circulation, it can not cross by means of the tiny oil passages to lubricate the valvetrain, combustion chamber, pistons, and different inside parts. It is no completely different from vigorously churning milk and turning it into butter, and a thicker, buttery consistency isn’t what an engine wants to stop it from breaking down.

Furthermore, extra oil means elevating the oil strain unnecessarily, which results in leaky gaskets and oil seals. In case your automobile out of the blue has an illuminated verify engine gentle after an oil change and has signs like blue or white smoke, subpar efficiency, or uncommon engine noises, it might imply the engine is drowning in oil.