A higher number indicates a higher resistance to flow, meaning the oil is thicker. The Science Behind Viscosity Viscosity is the scientific term for a fluid’s resistance to flow.
Understanding Oil Thickness Grade Number
Imagine comparing water to honey; water flows readily while honey is slow and thick. Automobile manufacturers rigorously test engines to determine the exact specifications that provide optimal protection, fuel economy, and performance.
An increase in this number signifies that the oil maintains its structure better under heat and stress, resisting thinning out too much. As engines age, internal components like bearings and seals can wear down, leading to larger gaps and increased oil consumption.
Understanding How the Grade Number Indicates Oil Thickness
The "W" in the designation stands for winter, and the number preceding it indicates cold-weather flow. When an engine runs, it generates significant heat.
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