What is the difference between API-SN and SP?
1 Answers
The differences between API-SN and SP are as follows: 1. Grade: SN is the second grade of gasoline engine oil, while SP is currently the highest grade of gasoline engine oil. 2. Oil film: The oil film of SN is relatively weak, while the oil film of SP is relatively strong. 3. Protection performance: The protection performance of SN is average, while the protection performance of SP is relatively strong. Here is some extended information about the specific introduction of engine oil quality grades: 1. API grade: API is the abbreviation of the American Petroleum Institute, and the API grade represents the quality grade of engine oil. 2. Engine oil level: SP-grade engine oil, as the highest grade of engine oil, is generally classified as fully synthetic oil. Semi-synthetic oil is mainly of SL and SM grades, and there are also SN grades.