Recovering the oils and fluids from the scrap is big business. I know of one place out towards Charlotte or in Charlotte NC that buys recovered fluids from reefers and autos. I know the yard I had mentioned, keeps autos to the side as well as the ac units and other "reefers" that come in. They specify in huge letters "We buy cars with Oil and Gas in".. they resale it after collecting it.. as well as the refrigerant.......... I can't say the same for others as there is a another yard down the road not even a mile that has a shredder and you can see the refrigerant blowing out of cars and reefers. Which is also funny because they act all high and mighty, advertising their shredder as a "hybrid". Saying its the first of its kind in the states running off of steam, "saving the environment" but lets throw a few more ac units and refrigerators in there that should balance things out.. their entire facility is powered by solar power .. kind of pisses me off when I think about it.. The yard down the road refuse to sell their shred to them and drives it almost 60 miles from Raleigh to Smithfiled Omni source because these two yards hate each other soooo much lol been a feud since the 70's.. but that another story for later ...