-----Original Message----- From: PAT <pdooley@GTE.NET> To: Vanagon@VANAGON.COM <Vanagon@VANAGON.COM> Date: Wednesday, May 20, 1998 11:56 Subject: Re: Vanagon A/C: R-12 to R-134a No-Mod Changeout
>Call your local garages. Most will evacuate your R12 system for free. They >reuse your R12 in other cars. Some clowns will try to charge you to >evacuate. >Have a garage pull a vacuum on your system. You should leak test it first >before paying someone to evacuate a leaking system. I guess you could >pressurize the system with compressed air to leak check, any better ways to >do this? After you are satisfied your system is holding a vacuum, add the >134A. Make sure you add the ester oil before pulling the vacuum. >Good luck, PSD. > >-----Original Message----- >From: Dave Mancuso <Mancuso@MTWP.K12.PA.US> >To: Vanagon@VANAGON.COM <Vanagon@VANAGON.COM> >Date: Wednesday, May 20, 1998 11:28 AM >Subject: Re: Vanagon A/C: R-12 to R-134a No-Mod Changeout > > >>I've seen a R-12 to R134A conversion kit, which contains new refrigerant, >>a can of oil, adapters, and hoses, BUT... >> >>Don't we need to have someone evacuate the system and flush it before >>using this kit? Or can I just put the new stuff in? >> >>Caveat: My system is drained of R-12 over the last couple of years, >>slowly getting warmer--unfortunately, I don't use it much--I should have >>turned it on every 2 weeks like I think Joel recommended once.... >> >>Opinions? BTW, I won't vent any leftover R-12 into the air, so that's not >>an option. >> >>--Dave >> >>On 5/20/98 11:05 AM EST, PAT said: >> >>>I have heard the ester oil in the conversion kits protects the compressor >>>seals. Apparently R12 helps cool and lubricate the compressor better then >>>134A, so R12 systems can get by with a "lesser" oil. This is purely >>>opinion, from people I have talked to. There is something you may want to look into. Penzoil puts out something called FR-12 (R-12 with an "F" in front). This is supposed to be more effici ent than R-134 and is something the Feds are not up arms about (at least not yet). I had my 88 Plymouth converted to it and it cooled great for a couple of weeks when a hose blew (Chrysler wanted $300 for a replacement hose and I have NEVER been that hot). The disadantage of this stuff is that it is not available at K-Mart like R-134 is. It seems that, even though FR-12 meets the same restrictions as R-134 and shhould be allowed in the stores, the bureaucrats dont like the name (sounds too much like R-12) and so have restricted. |
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