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What Category Does Engine Oil Belong To?

1 Answers

OCharlotte

07/24/25 5:26pm

Engine oil is categorized into mineral oil, semi-synthetic oil, and fully synthetic oil. Below is relevant information about automotive engine oil: Functions of engine oil: Separates the surfaces of relatively sliding components to reduce wear, carries heat back to the oil tank and then dissipates it into the air to assist the radiator in cooling the engine, and cycles carbon deposits, sludge, and worn metal particles from engine components back to the oil tank, flushing away dirt generated on the working surfaces of parts through the flow of lubricating oil. Engine oil quality grades: SA, SB, SC, SE, SF, SG, SH, SJ, SL, SM, where 'S' represents gasoline engine oil, and the subsequent letters denote the grade. Diesel engine oil is symbolized by 'C', with the following letters from 'A' to 'H' also arranged in ascending order of grade.

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