What is the best engine oil for Geely Vision?
1 Answers
According to the manufacturer's manual, the Vision should use engine oil of the following grades: 1. Summer: 20W-50 and 15W-40 API SJ or SL multigrade oil. 2. Winter: 10W-30 and 5W-30 API SJ or SL multigrade oil. Semi-synthetic and full-synthetic oils are two different types of engine oil: 1. Full-synthetic oil contains no mineral oil components, while semi-synthetic oil contains some. 2. The main difference between them is that full-synthetic oil can be used over a wider temperature range and has a longer service life. For the same oil film requirements, full-synthetic oil can achieve the desired performance with lower viscosity, while semi-synthetic oil requires higher viscosity to meet the same requirements. 3. In the same working environment, full-synthetic oil can protect the engine with lower viscosity. Similarly, in the same working environment, full-synthetic oil has a much longer service life than semi-synthetic oil. Although the initial cost is higher, when considering the reduced frequency of oil changes, it is not significantly more expensive than mineral oil.