What is lubricant? Explain viscosity and cloud and pour points of a lubricating oil.
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the pour of lubricant is lowest temperature at which the oil will flow from its container , when the obeject moves against any object friction will be present turning kinetic energy into heat energy
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Explanation:
According the ASTM standard, viscosity index is: —an arbitrary number used to characterize the variation of the kinematic viscosity of a petroleum product with temperature. Mathematically, viscosity index represents a relative measure of a lubricants temperature-viscosity behavior with respect to two reference oils.
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