"Finally, the oil drained from my cars is all recycled."


Well yes and no, oil could be recycled, the base stock never wears out only the additives. So if it was filtered and more additives were added fine you could run the same oil forever. But must used oil is burned as bunker fuel in large ships. Used oil has a little value thats why places take it for free.

__________________
2006 CL500
2009 C300 4matic
1969 280SE
2023 Ram 1500
2007 Tiara 3200