Meaning of Multi-Grade

MULTI-GRADE OIL

Multi-grade oil is oil that has viscosity modifier additives in it. These additives allow the oil to flow differently under cold and hot conditions. Multi-grade, or multi-weight oil is designated with two numbers. The first one is followed by the letter “W”. This first number indicates the viscosity (weight) of the oil in Winter (cold), and the second number indicates the viscosity (weight) of the oil under normal engine temperature (hot).

 

 

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