What Are the Grades of Full Synthetic Engine Oil?
1 Answers
Currently, the main grade is SN. The API on engine oil stands for the American Petroleum Institute, and it is divided into grades SA, SB, SC, SD, SE, SF, SG, SH, SJ, SL, SM, and SN. Below are the specific details: Engine Oil: The primary functions are lubrication, cleaning, and rust prevention. The ultimate goal is to extend the engine's lifespan. Generally, higher-grade engine oils provide better protection for the engine, so the price of the oil is proportional to its effectiveness. Full Synthetic Oil: It can operate over a wider temperature range and has a longer service life. Under the same oil film requirements, synthetic oil can achieve the desired performance with a lower viscosity.