What are the differences between diesel engine oil and gasoline engine oil?

1 Answers
DelIsabel
07/29/25 10:48am
Here are the specific differences between diesel engine oil and gasoline engine oil: 1. Oil viscosity: Generally, diesel engine oil with the same viscosity grade has higher viscosity than gasoline engine oil. 2. Fuel economy grade: According to the ACEA European Lubricant Classification Standard, they are divided into: A/B series for gasoline and light-duty diesel engine oils; C series for catalyst-compatible engine oils; E series: heavy-duty diesel engine oils. 3. Sulfur content: Diesel has higher sulfur content than gasoline. This harmful substance forms sulfuric or sulfurous acid during combustion, which, along with high-temperature and high-pressure exhaust gases, enters the oil pan, accelerating the oxidation and deterioration of the oil. Therefore, diesel engine oil formulations require more additives that are antioxidant and make the oil strongly alkaline.
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