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Yes.....that's why the high price . If anything worked as well , then R12 would be $2 a can ......

I can remember buying them by the case in the Discount stores for .99 cents a can. And a can wasn't 12 ounces.
Doesn't seem that long ago...We used to sell Peak Anti-freeze for $1.09/Gal too...
I heard those days will be returning soon after the 'Lections ".....yes sir.