The best kept secret about oil is that it can be recycled infinitely. Oil itself never breaks down, it merely becomes dirty, or the additives break down. Safety-Kleen takes used oil that would otherwise be burned or dumped and refines it again. The recycled oil returns to the market in a variety of forms as part of a cycle that can be endlessly repeated. Re-refining is a better solution for used oil and is recommended by the EPA and U.S. Department of Energy.