What Grade is SN Engine Oil?

1 Answers
OBrooklyn
07/24/25 4:52pm
SN-grade engine oil is classified as the highest grade of engine oil. Below is relevant information about SN engine oil: 1. Grade of SN engine oil: Engine oils starting with "S" are specifically for gasoline engines, meaning they cannot be used in diesel vehicles. Furthermore, engine oils are divided into twelve grades: SA, SB, SC, SD, SE, SF, SG, SH, SJ, SL, SM, and SN. With each ascending letter, the performance of the engine oil surpasses the previous grade. 2. Recommendations for using SN engine oil: Although SN-grade engine oil offers the best performance, it is advisable to use the grade specified by the engine manufacturer. However, if the vehicle is frequently driven in congested urban environments, using a higher-grade engine oil can be beneficial (more environmentally friendly and economical).
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