What's the difference between 5w and 0w?

[DeColeman]

The differences between 0W and 5W engine oil are as follows: 1. Different low-temperature viscosity: Low-temperature viscosity refers to low-temperature fluidity. W is the abbreviation for winter in English. The number before W represents the low-temperature fluidity of the oil. The smaller the number, the lower the low-temperature viscosity of the oil, the better the fluidity, and the more resistant it is to low temperatures. 2. Different low-temperature resistance: Generally, 0W oil can be used at temperatures as low as -35°C, while 5W oil can only withstand temperatures as low as -30°C. As the temperature decreases, the oil becomes thicker, increasing the resistance when starting the engine. If oil with poor low-temperature fluidity is used in extremely cold conditions, it may cause the car engine to start weakly or even fail to start.