A lubricant is a substance used to reduce surface friction and wear between interacting surfaces, to dissipate heat, prevent corrosion and transfer of power. In general, a good lubricant should have a high viscosity index, high flash and fire points (higher than the operating temperature of the machine), high oiliness, and high resistance towards oxidation and corrosion. Besides that, volatility loss and deposit of carbon should be kept low for industrial and machinery lubrication.