Energy independence through economic justification is one of the primary goals in today's global economy. In the 21st century, proper use of used oil for energy generation should not be overlooked. Combustion of used oil provides three benefits: it conserves energy, prevents pollution and minimizes used oil-management costs. The use of small used-oil generators can achieve these benefits without breaking environmental laws and regulations.
Used oil from cars, lawnmowers, and many other machines must be discarded properly to keep it from contaminating the environment. Used oil can be recycled to generate energy and small business owners/generators can economically benefit from re-using the oil as a method of "source reduction" to eliminate or reduce the creation of pollution through increased energy efficiency .