What is the best engine oil for Geely Vision?
2 Answers
According to the manufacturer's manual requirements, the Geely Vision should use engine oil of the following grades: 1. Summer: 20W-50 and 15W-40 - API SJ or SL multi-grade oil. 2. Winter: 10W-30 and 5W-30 - API SJ or SL multi-grade oil. Here is some extended information about engine oil: 1. The "0W-30" on the engine oil packaging label refers to the oil's viscosity grade, which is classified according to the SAE standard. The "W" stands for winter, and the smaller the number before it, the better the oil's low-temperature fluidity, indicating a lower usable environmental temperature and better engine protection during cold starts. The higher the number after it, the higher the oil's viscosity at high temperatures, providing better lubrication for the engine. 2. It is recommended to use fully synthetic oil. Semi-synthetic and fully synthetic oils are two categories of engine oil. The main difference between them is that fully synthetic oil can be used over a wider temperature range and has a longer service life. For the same oil film requirements, fully synthetic oil can achieve the desired performance with a lower viscosity, whereas semi-synthetic oil requires a relatively higher viscosity to meet the same requirements.
I've been driving a Geely Vision for my daily commute. The car's maintenance manual recommends using 5W-30 or 5W-40 oil, as these viscosities ensure the smoothest engine operation. In winter, 5W-30 offers better low-temperature fluidity, making cold starts quicker and easier. In summer, 5W-40 provides stronger protection under high temperatures. Although full synthetic oil is more expensive, it has a longer oil change interval and better cleaning performance, making it more cost-effective than mineral oil in the long run. I've tried full synthetic oils from Shell and Castrol, and the engine runs noticeably quieter with smoother acceleration. Remember to regularly check the dipstick; if the oil color darkens or the viscosity deteriorates, it's time for a change—don't exceed 8,000 kilometers.
