Difference Between 5W and 10W Engine Oil?

[LaAlyssa]

5W and 10W refer to low-temperature viscosity, and the smaller the number before the W, the better the low-temperature fluidity of the oil, the lower the minimum applicable temperature, and the stronger the cold resistance. Here is the relevant information: 1. Fluidity: 5W oil has better low-temperature fluidity than 10W, making it easier to start in cold environments. 2. Temperature: 5W oil can be used at a minimum temperature of -30 degrees Celsius, while 10W can only be used at a minimum temperature of -25 degrees Celsius. 5W oil has stronger cold resistance than 10W. Both types of oil can be used in various regions in the south, but in northern winters, 5W can barely be used in some areas, whereas using 10W oil may cause issues like the engine failing to start. In northern winters, it is advisable to choose 0W oil, which better meets the engine's requirements.