write the characteristic of a good lubricant
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A good lubricant generally possesses the following characteristics:
A high boiling point and low freezing point (in order to stay liquid within a wide range of temperature)
A high viscosity index.
Thermal stability.
Hydraulic stability.
Demulsibility.
Corrosion prevention.
A high resistance to oxidation.
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Suitable Viscosity
Oilness
Strength
Chemical Stability
Pour Point
Flash Point and Fire Point
Neutralization
Cleaning.
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