What is the classification of fully synthetic engine oil?
2 Answers
Currently, fully synthetic engine oil is mainly classified as SN grade. The API on engine oil stands for the American Petroleum Institute, and it is divided into SA, SB, SC, SD, SE, SF, SG, SH, SJ, SL, SM, and SN grades, with the grade increasing sequentially. SN grade is currently the highest grade of engine oil. Below is some additional information: 1. Benefits: Synthetic oil does not produce sludge and has a much better self-cleaning effect. At the same time, various additives are added to fully synthetic engine oil, which are mainly reflected in good wear resistance, better lubrication, and stronger temperature adaptability. Therefore, the performance of fully synthetic engine oil is superior to that of mineral oil in all aspects. 2. Introduction: In order to achieve better lubrication effects, humans have used chemical methods to synthesize various engine oils based on base oil. This is what is known as chemically synthetic engine oil.
The classification of fully synthetic engine oil is primarily based on the API (American Petroleum Institute) standards, such as alphanumeric combinations like SN and SP. The 'S' prefix denotes oils for gasoline engines, with higher numbers indicating more advanced formulations. The latest is SP, which significantly outperforms the older SN in terms of wear resistance and cleaning performance. Additionally, there are international standards like ILSAC's GF-6A and GF-6B, which focus on fuel economy and environmental protection. The European standard ACEA A5/B5 is also commonly used, especially in high-end vehicles. These classifications ensure the oil protects the engine under various driving conditions, reduces carbon deposits and sludge, and extends engine life. I frequently check these details because using the wrong grade can impact vehicle performance, so it's important to carefully review the labels on the packaging when selecting oil.
