What are “non-persistent” and “persistent” oils?
Non-persistent oil means a petroleum-based oil that, at the time of shipment, consists of hydrocarbon fractions: • of which at least 50% (by volume) distills at a temperature of 340 degrees C (or 645 degrees F); and • of which at least 95% (by volume) distills at a temperature of 370 degrees C (or 700 degrees F). Typical non-persistent oils include MGO, MDO, kerosene, no.2 diesel, aviation gasoline, and hydraulic fluids. Persistent oil means petroleum-based oils that do not meet the distillation criteria for non-persistent oils. Typical persistent oils include IFO 180, bunkers, heavy fuel oil, and NSFO.
