What Do Motor Oil Viscosity Ratings Mean?

While you might know that your vehicle takes 10W-40 motor oil in the summer, do you really know what those numbers mean? Let's take a closer look at what oil viscosity rating are and how you can select the correct motor oil for your vehicle.

The viscosity is a measurement of how much of the motor oil resists flow. So in layman's terms, the speed in which the oil can be poured out of the bottle is the viscosity. The higher the viscosity, the slower the oil moves. The lower the viscosity, the faster it flows. So in regards to the numbers on the oil bottle, let us take a closer look at the 10W-40 motor oil. The letter W is representative of the lowest temperature, followed by the number when the motor is hot. So for this example, the viscosity of the oil in 10W in a cold engine, and 40 after the engine has been running.

Be sure to call our Honda maintenance and repair facility in Colma, California so we can check the oil in your vehicle is appropriate and schedule you for future oil changes.

Categories: Service

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