What is the difference between gasoline engine oil and diesel engine oil?

1 Answers
IsabelDella
07/29/25 5:35pm
Gasoline engine oil and diesel engine oil differ in the following aspects: 1. Viscosity grade: Diesel engine oil has a higher viscosity than gasoline engine oil; 2. Fuel type: Gasoline engines are spark-ignited, where the fuel is ignited by spark plugs in the cylinder; Diesel engines are compression-ignited, where the fuel is ignited by the heat generated from compressing air in the cylinder. In other words, compressing air raises its temperature, and when this temperature exceeds the ignition point of diesel, the diesel combusts; 3. Cylinder compression: Gasoline engines have lower compression ratios, typically below 10, whereas diesel engines have higher compression ratios, generally above 14.
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