What are the types of engine oil?

[Maddox]

Engine oil is divided into three categories: conventional mineral oil, semi-synthetic oil, and full synthetic oil. The following are the relevant introductions: 1. Mineral oil: Mineral oil is a commonly used lubricant in the market. It is derived from the residual base oil after the refining process of petroleum, where useful substances like gasoline and aviation oil are distilled out. Essentially, it utilizes the inferior components of crude oil. 2. Semi-synthetic oil: Semi-synthetic oil is produced using semi-synthetic base oil, which is purified from mineral oil through hydrocracking technology. It is a mixture of mineral oil and full synthetic oil in a ratio of 4:6. The purity of semi-synthetic oil is very close to that of full synthetic oil, but its cost is slightly higher than mineral oil, making it an ideal transitional product from mineral oil to synthetic oil. 3. Full synthetic oil: Full synthetic oil is the highest grade of engine oil. It is derived from ethylene and propylene dispersed from natural gas or gas in crude oil, which then undergoes complex chemical reactions such as polymerization and catalysis to form a lubricating fluid composed of large molecules.