What do Oil Viscosity Ratings Mean?

The word viscosity is frequently used with motor oil description. Viscosity simply refers to the thickness of the fluid. It’s crucial to your engine’s performance to adhere to the manufacturer’s recommendations regarding oil and temperature. When an oil is too thin, it cannot lubricate the parts sufficiently. When it’s too thick, oil can bog down the engine and wear it out.

The numbers on a bottle of oil represent the limits of viscosity when the engine is cold or hot. A bottle that says 10W30, for example, tells you that the maximum viscosity when the weather or engine is cold should be no more than 10. The W stands for winter. The number following the W represents the viscosity range in hot weather or when the engine is fully warmed up. The lower viscosity oil works better in cold weather because it’s thinner.

One of our knowledgeable service technicians at Spirit Chrysler Dodge Jeep & Sprinter is here to help you with your questions. Our goal is to help you get the most out of your vehicle.

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