ENGINE OIL VISCOSITY PUZZLE

How do you measure lubricity of an oil and what are good/bad numbers?

Are you just advertising with that site? It’s quite the screed.
 
The lubricity is directly related to the base oil viscosity, before any viscosity modifiers are added. Notice how synthetic oils have a high viscosity and so can be added as half as much than mineral oils.
What does this mean?

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