What Causes Oil Dripping from the Exhaust of a Diesel Engine?

[Frank]

Oil dripping from the exhaust of a diesel engine is caused by aging valve stem seals. Below is relevant information about diesel engines: 1. Concept: A diesel engine is an engine that burns diesel fuel to release energy. The advantages of diesel engines include high power and good fuel economy. The working process of a diesel engine shares many similarities with that of a gasoline engine, with each working cycle also going through four strokes: intake, compression, power, and exhaust. 2. Development Prospects: The bulky size, loud noise, and black smoke emissions have given diesel engines a poor first impression for many people. However, after years of research and the application of new technologies, modern diesel engines are vastly different from their predecessors. Modern diesel engines typically employ technologies such as electronic fuel injection, common rail, and turbocharged intercooling, achieving significant breakthroughs in weight, noise, and smoke emissions, reaching levels comparable to gasoline engines.