R-12 freon to sell, how?

floivanus said

There's no reason to use r-12 in a car, to convert you put an adapter on the lowside, evacuate, pull a vacuum, charge with r-134 (3/4 or so what you'd use with 134) add dye and you've converted it. For a concourse look, unthread the adapter and replace the old cap.

But, one of those 'if you can sell it' things

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Not all cars can or should be converted. Not saying that chrysler system is one of them, but I had to have compressor rebuilt on my 74 caddy and said we should upgrade, but due to some of the parts in this system the guy I use for AC repairs said that it doesn't work in this type.

Also when we replaced a leaking hose on my 81 Imperial it was kept with R12 in it.

There are some people out there that would like to have it. But it is getting less each day as those cars are being put away. But someone restoring a car and wanting it original would be the best customer for it.