Motor Oil: What Do Grades Mean For Your Engine? - AutoZone

An oil's grade, or weight is a measure of oil's viscosity, which is used to measure how well it flows. Learn more.

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Engine oil viscosity grades explained

Learn About the Types of Engine Oil & How to Do Oil Maintenance

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Our remanufactured engines come with a parts and labor warranty and are tested for quality and prepared for easy installation. During remanufacturing

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Engine Oil Grades Explained

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What Oil Does My Car Take? - AutoZone

What Do Oil Grade Numbers Mean?