Is it better to use fully synthetic or semi-synthetic engine oil?
1 Answers
It is better to use fully synthetic engine oil. Fully synthetic oil has a wider operating temperature range and can protect the engine with lower viscosity under the same working conditions, while semi-synthetic oil has relatively higher usage requirements. Fully synthetic oil can be used under various harsh and severe conditions, with excellent performance in both high and low temperatures. Below is an introduction to both types: 1. Semi-synthetic engine oil is made from semi-synthetic base oil, which is a product purified from mineral oil through hydrocracking technology. It is a mixture of mineral oil and fully synthetic oil in a 4:6 ratio. The purity of semi-synthetic oil is very close to that of fully synthetic oil, but its cost is slightly higher than that of mineral oil. 2. Fully synthetic engine oil is a high-grade oil product derived from ethylene and propylene dispersed from natural gas or gas in crude oil, which undergoes complex chemical reactions such as polymerization and catalysis to form a lubricating fluid composed of large molecules.