有关engine oil的问题

楼上的几位。。。。

温度越冷机油越粘,谁跟你说越粘越好了,80w-120还有卖的,干嘛不去买

5W-20的意思是,冷发动机情况下这个机油粘度是5W的概念
热了之后是20W的概念

也就是说冬天5w-30跟5w-20是一个粘度,打火的时候

This is very good point.

For example, if you drive in Alaska. You will see how the oil be fuc-k-ed up by the weather. Oil will not be oil anymore. It will be wax like stuff. It wont lube your engine. And your engine blows
 
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