Abstract: Used engine oil is generated in significant amounts by the regular disposal of spent oil from internal combustion automobile engines. Due to rising industrial growth and population increase, the global energy demand has surged dramatically in recent years. This situation has resulted in a notable scarcity and shortfall in energy supply. An energy crisis occurs when there is a major disruption in the availability of energy resources to an economy. In response to the energy crisis, efforts have been made to manage waste while gaining insight into the economic advantages and technological developments that have established used engine oil as a reliable and effective source of heat for small to medium-sized industrial applications.