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there are a few companies out there making lube oils out of animal fats and other materials. i believe one of those companies is g-oil. ive used their motor oils in the past. had blackstone labs do an oil analysis and it faired as well as mobil 1 and valvoline full synthetic.
i dont think all oil is downcycled...valvoline is working on popularizing its 50% recycled pretty heavily right now. im sure other companies will follow.
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