What are the effects of overfilling engine oil on a car?

[StGrant]

Overfilling engine oil can have several negative effects on a car, such as increasing the wear of cylinder piston rings. Below are the detailed explanations: Effects: It can cause the engine exhaust pipe to emit blue smoke, lead to carbon buildup in the cylinders, accelerate the wear of cylinder piston rings, and cause carbon deposits on fuel injectors, thereby reducing the efficiency of the cylinders; It can result in issues like piston ring seizure and fuel injector clogging; it increases the risk of crankcase explosion; and it can lead to oil leaks. Methods to remove excess engine oil: Some oil can be drained from the oil pan's drain plug, but it's essential to wait until the engine has cooled down before draining; alternatively, a syringe and a plastic tube (like those used for IV drips) can be used to suck out the excess oil. Normally, the proper oil level should be between the upper and lower marks on the dipstick.