What are the automotive oil grades and levels

What are the automotive oil standards and levels

The engine oil is the engine lubricant, which can play a role in lubricating the engine to reduce wear, auxiliary cooling, sealing leakage, rust and corrosion prevention, shock absorption buffer, etc., is known as the blood of the car. So what are the automotive engine oil standards and levels?

1, gasoline engine oil level in accordance with the SAE viscosity grade, winter oil has six kinds, respectively, 0W, 5W, 10W, 15W, 20W, 25W. w indicates the abbreviation of the winter; the smaller the data in front of the larger the oil circulation, the lower the temperature available.

2. There are five types of summer oils, 20, 30, 40, 50, 60. The larger the data, the higher the viscosity of the oil, the stronger the high-temperature maintenance characteristics, and the higher the natural temperature environment in which the oil can be used.

3. There are 14 general-purpose ones in summer, which are 5W20, 5W30, 5W40, 5W50, 10W20, 10W30, 10W40, 15W30, 15W40, 15W50, 20W20, 20W30, 20W40, 20W50.

4. The API quality level divides the oils into the S-series and C-series. The S series is gasoline engine oil; the C series is diesel engine oil; when labeled with S and C, it means that the oil is diesel-gasoline universal; each series is sorted by letters (A, B, C, D, E, F, etc.), and the further back the letters are, the higher the grade and the better the performance.

5. At present, the grades of gasoline engine oil are SA, SB, SC, SD, SE, SF, SG, SH, SJ, SL, SM, SN, SP; and the grades of diesel engine oil are CA, CB, CC, CD, CD-II, CE, CF-II, CF-4, CG-4, CH-4, and CI-4.