Lubrication oil

A lubricant that is in liquid form. When two objects are in contact with each other and are in motion, the resistance that tries to prevent their motion is
called friction.  
Lubricant is used to reduce the force of friction and to remove the heat generated by friction.
Lubricant is used to reduce the force of friction and remove the heat generated by friction. In addition to antifriction and cooling, lubricating oil is used to disperse stress, seal, prevent corrosion, and protect against dust.