Another important viscosity indicator is the viscosity index. Oil thins out as it gets warmer, so engine oil viscosity refers to how well it pours at a particular temperature.Įngine lubricant viscosity is usually defined through its kinematic viscosity and dynamic viscosity (absolute viscosity). Thick, heavy fluids have higher viscosity (like grease).Thin, light fluids are low viscosity (like brake fluid).Here’s an easy way to think of viscosity: It indicates how thin or thick a fluid is - impacting properties like temperature resistance and lubrication. Viscosity describes how resistant a fluid is to flow. What’s the Difference Between Synthetic Engine Oil and Mineral Oil?.Does Motor Oil Type Affect Oil Viscosity?.What Are Popular Engine Oil Viscosity Grades?.What Happens When Engine Oil Viscosity Is Too Thick?.
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