What is lubrication oil?

Lubrication is the some oily or greasy substance in order to diminish friction. Lubrication oil is thick fatty oil is used to lubricate machinery. Oil and grease are the most common. Grease is composed of oil and a thickening agent to obtain its consistency,
while the oil is what actually lubricates. Oils can be synthetic, vegetable or mineral-based as well as a combination of these.