What is the difference between diesel and engine oil?
1 Answers
The differences between diesel and engine oil are as follows: 1. Different ignition methods: Diesel engines operate by compression ignition, which means the piston's pressure in the cylinder causes the diesel to self-ignite under compression. This requires a high compression ratio, meaning the piston moves deeper into the cylinder. As a result, diesel engines generally produce higher torque than gasoline engines. High torque doesn't affect speed but impacts instant acceleration and load capacity, which is why many utility vehicles use diesel—simply put, they are more powerful. Additionally, all diesel engines are turbocharged, which is another characteristic. 2. Cleanliness: Diesel is considered a clean fuel abroad due to its cleaner emissions and lower fuel consumption, leading many large-displacement vehicles overseas to opt for diesel. However, the situation is the opposite in China, where diesel is viewed as an unclean fuel. Why is this? Because diesel in China contains more wax, which tends to precipitate and solidify, clogging fuel lines and exhaust systems and causing more pollution. Therefore, many cities in China prohibit passenger vehicles from using diesel systems.