Thanks, Dave... I think they did some pretty thorough flushing to clean out the R134 oil. In any case, they seized up at least one compressor (on their nickel) before they got it right. The good news from my perspective is that I can once again work on my a/c system myself now that I can get coolant for it.
Royce Engler 1985 300TD Turbo 265K -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Dave M. Sent: Thursday, August 04, 2005 11:23 AM To: [EMAIL PROTECTED] Subject: Re: [MBZ] R-12 Hi Royce, I hope I'm not just being a Chicken Little here, but switching to Freeze-12 from 134a is probably a really bad thing. Your system would have been fed PAG/POE oil during the conversion to R-134a. The problem is, FR-12 is not particularly compatible with those oils, even though the mfr may claim it is. Read this page for more info: http://www.autofrost.com/hotshot/index.html The R-12 replacements (FR-12, AutoFrost, HotShot, etc) are all great products but only when used in an original, virginal R-12 system that still has mineral oil and has NOT been "contaminated" with PAG/POE oils. At least that's my opinion. For a car that's been converted to R-134a, or otherwise has PAG/POE oil, and you want a cheaper or more effective refrigerant... I'd try to use the GHG-X7 or -X8 products from AutoFrost. I believe these will perform better than DuraCool (which I think is safe for PAG/POE oils, it just doesn't work all that great in hot climates.) :-) Dave M. Boise, ID > ------------------------------ > Date: Thu, 4 Aug 2005 09:22:14 -0500 > From: "Royce Engler" <[EMAIL PROTECTED]> > Subject: Re: [MBZ] R-12 > To: "Mercedes mailing list" <[EMAIL PROTECTED]> > > I've just been through the saga of dealing with my a/c system, and it ain't > over yet. Here are some of the things I've learned along the way... > > Converted to R134 a few years ago when the evaporator started leaking. That > worked for a couple of years...started having troubles with it this year and > took it to an indie a/c shop for work. They said the compressor seals were > blown, and put in a new compressor. They then determined that the KLIMA > relay was toasted (I'm not sure how good an analysis this was). They put in > an aftermarket KLIMA, and started having problems with them frying. I say > them...I don't know how many of them they went through before they got one > to last. One of the other things they did was to replace the R134 with > Freeze12, which claims to be a replacement for R-12. I did a google on it > and found out that it's certified by EPA and readily available. It seems to > cool well. The indie a/c shop swears by it... > > Continuing on...blew the KLIMA relay (the aftermarket one) again, so I took > it to my regular indie, who said they had been having troubles with the > after market KLIMAs and put an OEM KLIMA on it. That part of the system > seems to be working, but I still think I'm losing FR-12...as I drive I keep > hearing something from time to time that sounds like a relief valve lifting. > Gotta check into that some more today. > > Royce Engler > > 1985 300TD Turbo 265K _______________________________________ For used parts email [EMAIL PROTECTED] For new parts see www.buymbparts.com For repairs see www.oldworldauto.com To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net
