What are the possible causes of diesel mixing into engine oil?

[VonElaina]

When diesel mixes into engine oil, it will cause the engine oil to become thinner, resulting in changes in both its color and odor. As the oil level continues to rise, it indicates that the oil pressure is increasingly sinking due to the addition of diesel, and symptoms such as idle vibration may occur. Additional information: 1. The role of engine oil: During operation, the metal components inside the engine that undergo frictional motion move at high speeds, and the working temperature can reach 400 to 600 degrees Celsius. Given the harsh working environment of engine components, engine oil effectively reduces friction between internal parts, lowers operating temperatures, and extends the service life of components. 2. The quality of engine oil: Engines have specific requirements for engine oil, which contains elements such as sulfur and lead. The content of these elements must be controlled within certain limits; otherwise, they can accelerate the wear and tear of engine components. The quality of engine oil significantly impacts the performance and longevity of the engine.