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lubricating oil.Common uses of viscous materials or liquids are used to lubricate part of machines,instruments,or appliances such as motor of electric fan;and protect metal from rusting​

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Answer:

lubricating oil sometimes simply called lubricant or lube is a class of oil used to reduce the friction heat and wear between mechanical components that are in contact with each other to be getting all is used in motorized vehicles where it is known specially as motor oil and transmission fluid

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