I’ve been researching this and can’t find much info. Remember when Valvoline had Nextgen but not anymore. Aside from Safety Kleen, is any oil company using rerefined basestocks?
It’s probably widespread. There are also several bio-based base oils. Those are biodegradable, so I’d imagine there’s some re-refining going on there.
Or maybe they’re using one of the enzyme ponds where the oily water is sent to a retaining pond with recirc til the enzymes have eaten the oil. Not really sure how those work, but we have them at every facility to clean the gray water discharge from the process areas. Maybe somebody here knows how they work and if I can just dump my waste oil into the system
Would a more accurate question be, what base stock suppliers use re-refined oil? My understanding is that there's only a handful of base stock suppliers industry wide, so if they use it, then all of the blenders would be using it.
Probably a moot point, re-refined should be unable to be distinguished from new out-of-the-ground refined stock.
Correct me if I'm wrong. Wouldn't a used PCMO be a much better starting point for refining as opposed to crude out of the ground? Seems like it would be a far 'cleaner' source, closer to the finished product and all.
Correct me if I'm wrong. Wouldn't a used PCMO be a much better starting point for refining as opposed to crude out of the ground? Seems like it would be a far 'cleaner' source, closer to the finished product and all.
It would if the dump tanks had only motor oils in them. Many dump tanks have a mixture of ATF, gear oil, and motor oils mixed in, so a lot of stuff has to be filtered out and or distilled out.