What is 97-grade engine oil?
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97-grade engine oil is a type of engine oil, consisting of 97% isooctane and 3% n-heptane. The following is a detailed introduction about automotive engine oil: 1. Overview: Engine oil, also known as engine lubricant, is called Engine-oil in English. Its density is approximately 0.91×10³ (kg/m³). It serves to lubricate and reduce friction in the engine, assist in cooling, seal against leaks, prevent rust and corrosion, and act as a shock absorber. 2. Composition: Engine oil is composed of base oil and additives. The base oil is the main component of lubricating oil, determining its fundamental properties. Additives can compensate for and improve the deficiencies in the base oil's performance, endowing it with certain new properties, making them an important part of lubricating oil.