There are usually some text signs on the paint buckets, indicating the division of grades or some instructions, etc. So what does the common API mean? Let Tawang Packaging Products Co., Ltd. tell you the meaning of the API on the paint bucket. API is the abbreviation of American Petroleum Institute. The word "API" on the oil barrel indicates that the oil has been certified by the American Petroleum Institute and its quality complies with the oil quality grade standards of the American Petroleum Institute. API standard gasoline engine oil quality grades are SF, SG, SH, SJ, SL, SM (new grade). The English letters are getting later, and the marking products are newer, the standards are higher, and they contain more additives. The oil quality grade starting with the letter C indicates that it can be used in diesel engines. We can use higher-quality engine oils instead of lower-quality engine oils, but we must never use engine oils of lower quality grades.
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