Viscosity ratings are important when it comes to selecting an appropriate motor oil. If you have ever been confused by numbers like "10W-30" when getting your oil changed, then here are some details about viscosity ratings that will make them easier to understand.

Viscosity is a metric that tells a consumer how a certain motor oil performs when resisting flow. A motor oil possessing a higher viscosity will be much thicker and move more slowly. These ratings are surprisingly simple to read. The number to the left of the W is that oil's low temperature viscosity, while the number to the right of the W is that oil's viscosity at times when the engine is hot.

In the heat, a high viscosity rating will perform better, but the opposite is true for colder temperatures. Understanding these measurements will be helpful when getting your oil changed at Ramey Ford Princeton's service department in Princeton, WV.

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