What Do Motor Oil Viscosity Ratings Mean?

Most drivers are vaguely aware of motor oil’s importance to their vehicle’s engine. At the very least, you probably know that oil helps to keep your engine’s moving parts lubricated to minimize friction and prevent damage. However, it is not simply enough to make sure that your engine has plenty of oil, as you also need to ensure that you use the right type of oil. For this reason, here is everything you need to know about motor oil viscosity ratings.

Viscosity measures a liquid’s resistance to flowing, which essentially means how thick or thin it is. Nonetheless, motor oil actually has two viscosity ratings, i.e. 10W-40. The first rating (before the W) is the oil’s viscosity at 0 degrees Fahrenheit, while the second rating is the viscosity at 212 degrees. This is important as most manufacturers recommend using different oil viscosities during hot and cold weather in order to protect the engine from damage and ensure it is easy to start.

At BMW of Myrtle Beach in Myrtle Beach, SC, our knowledgeable experienced service staff would be happy to provide you with any info you need to ensure you make the right oil choice. As well, we can handle the work of changing your oil for you so you won’t need to get your hands dirty.

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