Motor oils' viscosity is represented by SAE ratings, with multigrade oils offering flexibility. Factors like intermolecular interactions impact viscosity.
Viscosity of motor oils is determined by the SAE rating, with lower numbers indicating lower viscosity. Monograde oils have a single viscosity rating, while multigrade oils like SAE 20W/50 offer a range of viscosities for different temperatures. Viscosity is influenced by factors such as intermolecular interactions and molecular size.
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