Waste Oil Recycling Waste oil recycling is the process of converting used oil into new products. This can be done through a variety of methods, including re-refining, pyrolysis, and hydrotreating. Re-refining: Re-refining is the most common method for recycling waste oil. In this process, the oil is cleaned and filtered to remove impurities. The clean oil is then blended with virg... https://www.purepathtech.com/waste-oil-recycling-and-refining-a-guide-to-proper-disposal-and-management