Drivers know the importance of getting a car's oil changed. Some even check dipstick levels and add a little oil if readings are low. Does everyone fully understand viscosity ratings, though? For those unfamiliar with viscosity, the term refers to how easily motor oil flows. Thick motor oil would run slowly while thin moves a little faster. Temperature, however, can alter the oil’s flow.

In cold weather, oil might thicken. When the temperature increases during hotter weather, the oil may thin. Extremes in either direction can create problems inside the engine. So, motor oil comes with additives to address temperature concerns.

A W appears on the label between two numbers. The number before the W refers to the low-temperature viscosity. The one after the W is the high-temperature viscosity rating. Choose the right rating level for the season in Corvallis, OR. Please come to Wilson Motors for an oil change and other vehicle maintenance needs.

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