Oil parameter analysis

- Oct 17, 2019-

First of all, the engine oil has two kinds of labels, which are divided into SAE label and API label. "5W-40" is the SAE label, and "SN" and "SL" are API labels. So what do these two labels mean?

S meaning

Represents gasoline engine oil

N meaning

Starting from A

The lower the letter

The higher the quality level

5 meaning

The smaller the number

The better the low temperature fluidity

The more suitable for cold weather

W meaning

Express winter

40 meaning

Represents high temperature resistance of engine oil

Higher value

Higher protection at high temperatures