IMPORTANCE OF GRADING IN OIL

IMPORTANCE OF GRADING IN OIL

We observe that when ever we change the oil the retailer ask about the grades?

What are these grades? how they benefit us? Is there any hidden message in these grades?

Simply answering to these questions yes these are important. They have hidden information in the 

codes. They are very useful for our engine life. EVERY GRADE have different effects on engine and according to the seasons. lowest grade is 0W-20 and highest grade is 20W-50 but in 50 grade is also available in local pakaging with local brand used for pressure jacks and old machinery.

XX W- YY

Now what does the basic codes says:

According to SAE  society for the automotive engine have design the scale according to them grades are checked as numbers allotted.   

xx stands for  

In winter the oil viscosity will low and it will have high change to pump lower the number lower the viscosity high performance in winter.

W stands for

W stands for at which degree oil viscosity is maintain or oil can bear.

YY stands for

In hot summer day the viscosity is high performance is high and to what extend the oil can bear the heat.