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What is Mineral Oil?

1 Answers

DelKimberly

07/30/25 9:29am

Mineral oil is a type of engine oil, which refers to lubricating oil whose base oil raw material is mineral oil, not synthetic oil. The following is a detailed introduction to the classification standards of engine oil grades: 1. Types of engine oil: Engine oil grades are divided into gasoline type, diesel type, and gasoline-diesel universal type: Those starting with the letter "S" represent oil for gasoline engines, with specifications including API SA, SB, SC, SD, SE, SF, SG, SH, SJ, SL, SM, SN; Those starting with the letter "C" represent oil for diesel engines, with specifications including API CA, CB, CC, CD, CE, CF, CF-2, CF-4, CG-4, CH-4, CI-4. If both are present, such as SM/CF, it indicates that the oil is a gasoline-diesel universal type. 2. Meaning of the letters: The further back the letter after S or C, the higher the quality grade of the oil, the more stable the performance, and the higher the oil grade. Currently, the market also divides engine oil into three categories: mineral oil, semi-synthetic oil, and synthetic oil. The corresponding oil grades are SA to SJ for mineral oil, SJ and SL for semi-synthetic oil, and SM and SN for fully synthetic oil. In addition to the oil grade identification, some engine oil packaging will have the SAE mark. SAE is the abbreviation of the Society of Automotive Engineers, which formulates the standard viscosity values for engine oil, such as 5W-30.

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