used engine oil

Used engine oil is a recovered petroleum-based lubricant collected from automotive, commercial, and industrial engines after service life. It is supplied as a bulk liquid feedstock for re-refining, fuel blending, industrial energy recovery, or authorized waste treatment operations, depending on local regulations and buyer requirements. Typical material characteristics include a dark brown to black appearance, variable viscosity, and the presence of suspended carbonaceous particles, oxidation byproducts, and trace contaminants from engine wear and combustion. Because quality can vary by source and handling, commercial transactions usually specify moisture, sediment, flash point, and contaminant limits before acceptance. This product is generally handled in sealed drums, IBC totes, or tanker loads and traded by weight in metric tons. Buyers in recycling, reprocessing, and authorized disposal channels value consistent collection, documentation, and compliance with environmental controls. Used engine oil should be stored and transported in accordance with applicable hazardous waste and petroleum handling regulations to prevent leakage, contamination, and fire risk.