Re: 56 A/C info

Posted by Owen_Dyneto On 2016/4/27 9:03:44

Perhaps you know that under the terms of the Montreal Protocol and subsequent ammendments many of the chlorofluorocarbons were banned from import, sale and use except for a very few specific exemptions for some military and medical uses - Freon 12 is among the very worst of the ozone-deleting substances of that class and it was pretty much universally banned in 1996. R-134A was the substitute, so I doubt you'll find it offered legally by any legit commercial source. A conversion will require a change of lubricant oil as the mineral oil used with R-12 is incompatible with R-134A; new seals, hoses and dryer or accumulator may also be needed but all that is well-known, conversions have been going on for 20 years now. All that said I've seen cans of R-12 for sale often at the larger antique auto flea markets - I suspect you'll have to do the charging yourself as any honest service facility will probably refuse to handle it.

Thousands and thousands, more likely tens or even hundred of thousands of old Freon 12 automotive AC systems have been converted to acceptable substitutes so, properly done I don't think there should be any problem.