What happens if too much engine oil is added to a diesel engine?

[StEden]

Excessive diesel engine oil can reduce the engine's output power. Here are some relevant introductions about diesel: 1. Performance: Diesel is a light petroleum product, a complex mixture of hydrocarbons with carbon atoms ranging from about 10 to 22. It is used as fuel for compression-ignition engines (i.e., diesel engines). It is mainly composed of diesel fractions produced through processes such as crude oil distillation, catalytic cracking, thermal cracking, hydrocracking, and petroleum coking (and also requires refining and the addition of additives). 2. Uses: Due to the lower fuel consumption of high-speed diesel engines (5075g/MJ) compared to gasoline engines (75100g/MJ), the number of large transport vehicles using diesel engines is increasing.

[AngelinaMarie]

The consequences of overfilling diesel engine oil are quite serious. I remember one time at a self-service gas station two years ago, my hand slipped and I poured in an extra liter of oil. Within half an hour of driving on the highway, thick blue smoke started pouring out from the rear of the car, like burning oil, which scared me so much that I immediately pulled over. Upon inspection, I found oil stains on the ground and the oil seal was leaking. At the repair shop, I learned that too much oil caused excessive internal pressure, foaming of the oil, reduced lubrication, increased engine noise, and decreased efficiency. Long-term overfilling can accelerate wear and increase fuel consumption, wasting money. It's recommended to check the dipstick level to ensure it's at the midpoint during each maintenance. If overfilled, use a tube to remove some oil. Regular maintenance is crucial to prevent problems. Driving safety is no small matter; don't take it lightly.

[DeHector]

Excess oil is detrimental to diesel engines. A common question from friends during car chats, the actual effect is that surplus oil causes a sharp rise in crankcase pressure, leading to oil leaks from seals or gaskets, leaving the engine area slippery and greasy. If foam is churned up during operation, lubrication performance drops significantly, increasing internal friction and noise. Worse, oil may be sucked into the combustion chamber, causing blue smoke from the exhaust pipe, polluting the environment, and clogging the catalytic converter, affecting performance. When changing oil yourself, carefully measure within the marked range, generally not exceeding the upper limit. Address any abnormalities early to avoid engine overheating and part damage. Regular checks can save you trouble.

[KinsleyMarie]

Adding too much diesel engine oil is really dangerous. I once tried overfilling the oil in my old car, and it resulted in smoke from the engine and oil leaks, leaving a trail of slippery oil while driving. The reason is that excessive oil can easily be sucked into the cylinders and burned, causing heavy smoke and pollution, and even posing a fire hazard. High internal pressure can damage seals, and repairs aren't cheap. While driving, insufficient power affects safety. I recommend supervising each maintenance session to ensure the oil level is precisely measured—don’t just top it off casually. Safety first, no slacking.