Is SN Engine Oil Fully Synthetic?

[DelGriffin]

SN-grade engine oils are generally fully synthetic. The 'S' at the beginning indicates that the oil is for gasoline engines, and the second letter represents the quality grade. There are a total of 12 quality grades for engine oil, ranging from SA to SN, with each subsequent letter indicating superior performance compared to the previous one. The SN grade is the highest rating for gasoline engine oils under the standard. Relevant information about engine oil is as follows: 1. Introduction: Engine oil, also known as engine lubricant (English name: Engine-oil), has a density of approximately 0.91×10³ (kg/m³). It serves to lubricate and reduce friction, 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: Engine oil consists of two main components: base oil and additives. The base oil is the primary component of lubricating oil, determining its fundamental properties, while additives compensate for and improve any deficiencies in the base oil's performance, imparting new characteristics. Additives are an essential part of lubricating oil.