Oil Re-Refining Re-Refining Process RE-REFINE. RENEW. REUSE. The Largest Re-Refiner of Used Oil in North America. Every year, Safety-Kleen returns more than 200 million gallons of used oil to the marketplace as clean, pure motor oil and associated products. Our state-of-the-art processes allow us to fully realize oil’s amazing capacity to be recycled and reused indefinitely with quality equal or better that lubricants made from virgin crude. Oil re-refining reduces greenhouse gases and heavy metal emissions when compared to burning used oil as fuel. Re-refining is a better way to manage used oil. It is easier on the environment and transforms oil into a renewable resource. Safety-Kleen’s advanced re-refining technologies and processes have earned the latest ISO 9001-2000 certification. This relentless commitment to quality helps Safety-Kleen provide the highest performing oil products that meet API, SAE & Military specifications. Click here to learn about our re-refining process. Oil Re-RefiningFull Description:With the biggest re-refinery operation in North America, Safety-Kleen collects more than 140 million gallons of oil a year.Short Description:With the biggest re-refinery operation in North America, Safety-Kleen collects more than 140 million gallons of oil a year.