The lubricating action of an oil is more if it possess:-

(1) High vapour pressure

(2) low vapour pressure

(3) High surface tension

(4) High density

Concept Videos :-

#3 | Introduction to Colligative Properties
#4 | Relative Lowering Introduction to Colligative Properties

Concept Questions :-

Relative Lowering of Vapour Pressure/ Vapour Pressure
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