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How are the grades of engine oil classified?

1Answers
ZoeyRose
07/25/2025, 01:59:21 AM

The classification methods for engine oil grades are: 1. AB series: gasoline and light-duty diesel engine oils; 2. C series: catalyst-compatible engine oils; 3. E series: heavy-duty diesel engine oils. The functions of engine oil are: 1. Reducing friction and high temperatures; 2. Cooling and lowering temperature; 3. Cleaning and purifying; 4. Damping and cushioning; 5. Rust and corrosion prevention. Engine oil, also known as engine lubricant, includes: 1. Base oil: the main component of lubricating oil, determining the basic properties of the lubricant; 2. Additives: compensating for and improving the deficiencies in base oil performance. The impacts of using inferior engine oil are: 1. Degrading the quality of the oil, reducing its performance; 2. Damaging the lubrication of precision parts in fuel pumps and injectors; 3. Decreasing the power of the generator set; 4. Affecting the combustion efficiency of the engine.

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