The increasing need for cleaner and sustainable energies provoked by the contamination emitted to the atmosphere made by petrol sources had made Black Diesel an option to diversify these sources. Diesel is a product derived from petroleum, its being used in all types of engines that starts with combustion by pressure. Its produced from raw petroleum by several filtration processes, which, come from petroleum wells. Its being expected that the demand from petroleum will just grow. The demand for petroleum derivate is increasing steadily and will not stop into the short term.The present book was written on the idea of inform, entertain, communicate and train those people that decide to take advantage from wasted petroleum based oil as an energy source. During the book, will be explained two main categories to produce Black diesel, AKA dark diesel from WMO (wasted motor oil). The first one is and approaches as a practical, home-based process, and the second is based on scientific proven techniques that need specialized equipment and some extra chemicals processes.