All of us know that we are supposed to change the oil in our cars regularly, but other than natural or synthetic, most people don’t typically think about what oil goes in or comes out. Re-refined or re-processed oil is engine lubricant that is exactly what it sounds like — used oil that has been re-refined for reuse. Is re-refined oil safe for your car?
Source for this article: The basics of re-refined oil
The process of re-refining oil
Oil from petroleum doesn't wear out. It gets dirty instead. The additives that are in the oil do wear out, but the oil itself does not. When used motor oil is re-refined, it is put through much the very same process as crude oil. The oil is cleaned, refined and re-blended with additives to create a product that is comparable to lubricants created with crude oil.
Approve the re-manufactured oil first
You should take precautions before using it although it is safe. Make sure that the re-refined oil you or your mechanic are using is American Petroleum Institute approved. Typically API approved oil can be required. API approved oil has also undergone stringent testing requirements that make sure it does what it is supposed to. It needs to be API approved whether re-refined or not. If you use a mechanic, check with them that they are using API approved oil, re-refined or not.
Re-refined oil benefits
Re-refined motor oil has many benefits above and beyond lubricating your engine. Used motor oil is really a toxic waste, and is generally disposed of in a variety of not-so-environmentally-friendly ways. Re-refining oil helps to make a closed-loop system, where the nonrenewable resource of oil is regularly re-used. 2.5 quarts of re-refined oil is made with a gallon of used motor oil. The byproducts are used to power re-refining plants and create asphalt roof shingles. If all motor oil in the United States was re-refined, there would be enough recycled oil to maintain about 8 million vehicles each and every single year.