How to Read Engine Oil Grade and Specification Charts
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When reading engine oil grade and specification charts, look for the 'W' symbol. The smaller the number before 'W', the lower the low-temperature viscosity, the better the low-temperature fluidity, and the lower the applicable minimum temperature. Below is relevant information about engine oil: 1. Introduction: Engine oil, also known as engine lubricant, is hailed as the 'blood' of a car. It serves to lubricate, clean, cool, seal, reduce friction, prevent rust, and protect against corrosion in the engine. 2. Grade Classification: Engine oil grades are divided into three categories: summer, winter, and all-season oils. 3. Composition: Base oil is the main component of lubricants, determining their fundamental properties. Additives compensate for and improve any deficiencies in the base oil's performance, providing certain new characteristics, making them an essential part of lubricants.