What are the engine oil models and how to choose them?

Engine oil model refers to the viscosity specification of engine oil. At present, the commonly used engine oils for private cars are "0w20, 0w30, 0w40, 5w20, 5w30, 5w40". The middle "w" stands for winter; The number before w stands for low-temperature fluidity, 0W stands for engine oil at -35℃, 5W at -30℃ and 10W at -25℃. The smaller the number, the better the low-temperature fluidity.

The better the cold start performance of an automobile, 0W engine oil generally has a better performance experience than 5W engine oil. The number after W represents the high temperature viscosity of the oil. The higher the numerical value, the higher the high-temperature viscosity. We first choose the engine oil model according to the high temperature viscosity during maintenance.

system of selection

Choose according to the model.

Japanese cars and Korean cars: Most Japanese cars and Korean cars have precise engine structures, especially Japanese naturally aspirated engines usually use 20 viscosity oil. There are also some models like Jaguar Land Rover, which can use 20 oils in the previous 50,000 kilometers.