Is it still a headache for motorcycle gear oil selection? Let's take a look at this article（final part）
Next to say is the oil labeling, such as the common 10W-40, in which W represents winter, the number 10 in front of the W represents low temperature flow performance, the smaller the number, the better the low temperature flow performance, and in the cold winter can also be a smooth start.
The -40 behind 10W-40 represents the ability to resist high temperature lubrication. The greater the number is, the stronger the high temperature, and the thicker it is. The smaller the number, the smaller the resistance of the motorcycle with low calorific value.
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