R12 is superior to R134a in every way but cost.
I have a 1989 GL wagon with 28 oz of R12 freon still in it. <not proven>
http://www.techchoiceparts.com/refrigerant-and-oil-capacities/subaru
Is it worth it to sell it to a local mechanic who still work with R12?
If so what's a fair price?
I read this article from the US EPA, God bless them, here: https://www.epa.gov/section608/section-608-technician-certification
= lots of new rules come Jan 1 2018
thoughts? comments? ... and go!