What Season is 5W30 Engine Oil Suitable For?

[DiBrianna]

5W30 is a multi-season engine oil suitable for use in most regions of China. The smaller the number before the "W," the lower the low-temperature viscosity, the better the low-temperature fluidity, and the lower the minimum applicable temperature, providing better engine protection during cold starts. The larger the number after the "W," the higher the high-temperature viscosity of the engine oil, the thicker the oil film, and the better the sealing and protection capabilities. Below are some relevant details about engine oil: 1. Different viscosities of engine oil result in varying sealing and anti-wear effects. 2. Using an inappropriate engine oil viscosity can accelerate engine wear, reduce cylinder sealing, affect combustion efficiency, and lead to carbon deposits. 3. There is no "best" engine oil, only the most suitable one. It is recommended to choose the appropriate engine oil based on the vehicle model and the temperature of the operating environment.