What are the effects of too much or too little engine oil on the engine?

[DiEliza]

The effects of too much or too little engine oil on the engine are as follows: 1. Effects of too much engine oil: Excessive engine oil leads to a high oil level in the crankcase, which can increase engine load and reduce power output, noticeable from the engine sound. It also raises internal engine pressure, potentially damaging seals such as the front and rear crankshaft oil seals, oil pan gasket, valve cover gasket, and camshaft oil seal. Over time, the engine's exhaust ventilation system may also be damaged, increasing carbon buildup. Excessive oil can also create a false impression of oil burning. If the oil level exceeds the upper limit on the dipstick, it should be promptly drained to the normal level. 2. Effects of too little engine oil: Initially, this usually affects the overall lubrication of the engine, particularly components lubricated by crankshaft splash, leading to increased wear or even damage. If the oil level drops further, more severe damage can occur, potentially affecting all internally lubricated components such as the camshaft, crankshaft, cylinder walls, and bearings.