Freeze-12 is 80% R134a and 20% some other refrigerant that doesn't come to mind at the moment- the '20% other' is supposed to reduce operating pressures to within R-12 spec so as not to overload the equipment. I read a description of the result of mixing R-12 and R-134 and their oils as being something akin to wet yellow popcorn. Not good. Here's this in case you don't have it: http://www.gti16v.com/tb879503.htm That should get you started. Cya, Robert ----- Original Message ----- From: "Kim Brennan" <kimbrennan@MAC.COM> To: <vanagon@GERRY.VANAGON.COM> Sent: Tuesday, May 30, 2006 1:36 PM Subject: Re: AC tinkering
> You should not mix refrigerants. That's not just a recommendation, > its EPA rules. > > Freeze-12 is (I believe) a mix of R134a and other refrigerants, but > even so, you should never mix refrigerants on your own. Either get > your system recharged with R12, or get your system converted. If you > aren't going to stay with R12, you should get your system properly > converted to R134 (change of oil, receiver/dryer and new quick > disconnect fittings). > > > On May 30, 2006, at 2:39 PM, Susan Powell wrote: > > Got a '87 with a "sorta" working ac. I got some Freeze -12 but > wondering if it will mix with whatever old R12 is in the system or > should I evacuate the system and start from scratch? I would like to > just get something in it to help with cooling car but I don't want to > wreck anything. I have learned alot about vanagons from this forum. > Thanks for the comments. R, Steve |
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