你不觉得这文章前后矛盾吗？

前面：
In 0W-16 viscosity oil, the viscosity indicates that the oil flows quickly and easily like 0 weight oil in cold temperature, 
Whereas, in 0w-20, the oil also flows easily like 0 weight when it is cold outside. 
这两句解释了前面的数字 0W 代表什么意义，也说了这两种油在冷天的流动性相同。

后面却是这样说了：
0W-16 oil can flow easily at ambient temperatures as low as -40°C, whereas 0W-20 can also flow normally down to -30°C.
低温下的流动性并不一样，还是有区别的。

此0W非彼0W ？