Is 5w40 a multi-season engine oil?
1 Answers
5w40 is a multi-season engine oil. 5w40 represents the model of the engine oil, where the number before 'w' indicates the lowest temperature the oil can withstand. The smaller the number before 'w', the lower the viscosity of the oil at low temperatures, resulting in better fluidity and suitability for lower temperatures. The number after 'w' represents the viscosity of the oil at 100°C. The higher the number after 'w', the higher the viscosity, which provides better protection for the engine under high-temperature conditions. Below is relevant information about engine oil: 1. There are three types of engine oils used in cars: mineral oil, semi-synthetic oil, and fully synthetic oil. 2. Mineral oil is refined from crude oil. This type of oil has the shortest usage cycle because it tends to degrade over time, requiring replacement approximately every 5,000 kilometers. 3. Semi-synthetic oil is a blend of synthetic oil and mineral oil, offering a middle ground between fully synthetic and mineral oils. 4. Fully synthetic oil is entirely manufactured through chemical processes and has the longest usage cycle, requiring replacement approximately every 10,000 kilometers.