What are the four major brands of engine oil additives?

[DiMiles]

The four major brands of engine oil additives are Lubrizol, Infineum, Chevron Oronite, and Afton. Below is relevant information about engine oil: Function: Engine oil, also known as engine lubricant, serves to lubricate and reduce friction in the engine, assist in cooling, seal against leaks, prevent rust and corrosion, and provide shock absorption. Classification: Gasoline engine oils are divided into two types: mineral oil and synthetic oil. Synthetic oils are further categorized into semi-synthetic and full-synthetic oils. Composition: Engine oil consists of base oil and additives. The base oil is the main 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, making them an essential part of lubricating oil.