Actually, I disagree.
Aside from venting R12 to the atmostsphere, which will get you a hefty fine, or jail sentance...
Last time I looked, R12 was about $10/lb.
When I had my Trucks system recovered, it cost me $50...
Later, when I went back to have it put back in he charged me $130... and charged me for the R12!
I pointed out that he had taken my R12 out and now he was charging me per pound to put my own R12 back in.....
Its a scam, and I dont like being scammed.
I paid $300 for my own R12 recovery and recharge system...
I think thats a bargain.

Don't buy the stuff from Snap-On.....
I paid $49 for each moisture filter... Snap-on, adds their label, and charges $112....
Where there is a will, there is a way!

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2009 Mercedes ML320 Bluetec