What Do Motor Oil Viscosity Ratings Mean?

When you hear viscosity used to refer to types of motor oil, just remember that viscosity means the thickness of a fluid. One critical aspect of keeping your engine running smoothly is motor oil. Oil that’s too thin won’t lubricate the parts well enough. If it’s too thick, it causes the engine to work too hard.

The numbers on a multi-grade bottle of oil tell you what the cold and hot weather viscosity of the oil is. If it’s a 5W30 weight, for instance, that indicates that a viscosity of 5 is the maximum limit in cold weather or when the engine is cold. The W stands for winter. The second number represents the thickness range of oil when the engine is warmed up or the weather is hot. A lower viscosity is thinner oil, and it is more fluid in cold conditions than a thicker substance.

When you’re in the Vineland area, stop by Toyota of Vineland. One of our experienced service technicians will be happy to answer your questions. We’re here to help you get the most out of your vehicle.

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