What does 5w30 SN grade mean?

1 Answers
MelanieMarie
07/24/25 2:20am
5w30 SN grade refers to engine oil used in winter. Below are the relevant explanations: 1. Oil grade: The further the letter after "S" is in the alphabet, the higher the oil grade. Whether it's for gasoline or diesel vehicles, each incremental letter in the oil quality grade indicates better performance than the previous one. Therefore, SN grade oil is undoubtedly the one with the best performance. SN grade oil also has relatively lower phosphorus content. In terms of both environmental economy and performance, SN grade oil performs exceptionally well. 2. Precautions: When selecting an oil grade, it's not necessarily the case that the higher the grade, the better. It's best to use the oil grade specified for the engine. Of course, if the vehicle is frequently used in congested urban environments, using a higher grade oil can be more environmentally friendly and economical.
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