What do Motor Oil Viscosity Ratings Mean?

Your engine oil has many important jobs to do. Among other things, it must lubricate, seal, and clean a variety of engine components. In order to do these jobs effectively, engine oil needs to have the ability to maintain its structural integrity under tough internal engine conditions. Viscosity ratings are numbers that let drivers know what kinds of conditions their oil is made to endure.

In general, lower numbers denote thinner fluids, while higher numbers indicate thicker fluids. Thinner fluids tend to work well in lower temperature environments, and thicker fluids do better in warmer weather. In addition, special winterized engine oil varieties include the letter "W" after the first set of numbers. For example, an oil marked with the symbols "5W-30" indicates a winterized, multi-grade engine oil.

In order to get more out of your engine and your motor oil, it can help to have expert advice. Here at Kuhio Hyundai in the Lihue, HI area, our skilled and experienced oil service technicians can help you to select the oil-grades that are appropriate for your vehicle, driving habits, and operating environment. Swing by today for a fast, no-obligation consultation.

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