What Does a Motor Oil's Viscosity Rating Mean?

Motor oil comes in many varieties today, but one thing they all have in common is viscosity. The exact viscosity of motor oil is important because the viscosity needed for one engine can be different than the next.

Why does motor oil viscosity matter? Oil is thicker at cold temperatures and thinner when heated. A car in a cold climate needs to start at temperatures below freezing, and every car needs oil with a certain viscosity once the engine is hot. Oil viscosity ratings consist of two numbers. The first is the cold temperature viscosity, and second is the hot temperature viscosity of the oil. Choose the oil your owner's manual recommends for your car.

Our service center at Atlantic Audi West Islip is staffed with service technicians who are ready to help you with your car's maintenance needs. Stop by at our location in West Islip when it's time for an oil change.

Categories: Service

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