What is the difference between SL and SN oil grades?
1 Answers
SN oil grade is higher than SL. The API grade represents the quality level of engine oil. It uses simple codes to describe the working capability of engine oil. Oil grades are classified into SA, SB, SC, SD, SE, SF, SG, SH, SJ, SL, SM, and SN levels. The later the letter, the higher the grade, with SN being the highest grade of oil currently available. Below is a related introduction: 1. Introduction to engine oil: Engine oil, also known as engine lubricant, has a density of approximately 0.91×10³ (kg/m³). It serves to lubricate and reduce wear, assist in cooling, seal against leaks, prevent rust and corrosion, and provide shock absorption for the engine. It is often referred to as the 'blood' of a car. 2. Composition of engine oil: Engine oil consists of base oil and additives. Base oil is the main component of lubricating oil, determining its basic properties, while additives can compensate for and improve the shortcomings of the base oil's performance, granting it new properties. Additives are an important part of lubricating oil.