[W126 Coupe] Switch to R134

[Iain Gunn]

Freeze 12 and Duracool are the same product
----- Original Message ----- 
From: <jralex at ix.netcom.com>
To: "Mercedes Coupes Mailing Lists" <mbcoupes at mbcoupes.com>
Sent: Saturday, August 13, 2005 3:55 AM
Subject: Re: [W126 Coupe] Switch to R134


> Another option is to do a search on 'Freeze 12'. It is available for $8 or 
> $10 per can. They offer a kit with 3 cans and a hose required for their 
> can fittings. I have bought Freeze 12 and successfully used it on several 
> vehicles that only needed maybe a can to actuate the compressor clutch. I 
> bought it at NAPA last year but they no longer carry it due to managerial 
> confusion about its legality. Richard, this might just be a simple, 
> inexpensive way to go and get you through the season. My thought then was 
> to try it and if it worked through summer then deal with it properly 
> later. Well, it is still later-2 years later and have had no need to do it 
> properly because my a/c works. Now for the non-chemistry, chemistry. 
> Freeze 12 is a gas so similar to R12 that it works as a direct 
> replacement. Only add enough to make the compressor clutch engage and 
> remain engaged. If it engages and dis-engages to fast then open the freeze 
> 12 can for another short burst until engagement stays. Too much gas 
> behaves the same as not enough. I say you can have cold air for less than 
> $50 this way. That would be 3 cans gas and the transfer hose kit. Just 
> Google Freeze 12 and think the brand is Johannson's. I know of a couple of 
> mechanics around here using the same product and two who vaccum it into 
> their recovery machine along with R12. Jim Alexander- 'a hairbrained 
> chemist'
>
> -----Original Message-----
> From: airedale at sbcglobal.net
> Sent: Aug 13, 2005 2:11 AM
> To: Mercedes Coupes Mailing Lists <mbcoupes at mbcoupes.com>
> Subject: Re: [W126 Coupe] Switch to R134
>
> Here is another thought!
> Quote:
> Originally Posted by twochaps
> He said he only needed to vacuum out the old stuff, install a couple of 
> new
> couplings and then add the new R134 or whatever it is called. Question: 
> Can
> or should this be done without ruining the old A/C system?
>
>
>
> Yes what he said is true. BUT, in a year or 2 you will be replacing the
> compressor and flushing the system due to a compressor failure.
>
> Read this, it's called "black death"
>
> http://www.ackits.com/index.cfm?fus...n=black%20death
>
> So yes you can install R134A cheaply but you will pay for your mechanics
> lousy work later.
>
> Keep the car R12 if you can. If the car has "some " freon pressure, have 
> the
> system evacuated, test the system for leaks, It should hold the vacuum for
> 30-45 minutes. If it does then you have slowly leaked the freon. 1/2 lb.
> leak a year is acceptable, not good, but acceptable. If the system holds 
> the
> vacuum then have the proper amount of R12 installed, I would include a dye
> for any future leak checks.
>
> Dave
> __________________
> 1970 220D owned1980-1990
> 1980 240D owned1990-1992
> 1982 300TD owned1992-1993
> 1986 300SDL, owned1993-2004
> 1999 E300 owned 1999-2003
> 1982 300TD, 189,000mi, owned since 1990
> 1988 560SL, 89,000mi, owned since 1995
> 1965 Mustang Fastback (My sons)
> 1983 240D, 156,000mi(My daughers
>
> I have had a HVAC license for the past 22 years and I an not sure what you
> mean by  WE ALL KNOW THIS IS NOT LIKLY TO BE THE CASE.
> ----- Original Message ----- 
> From: FOOTFXR52 at aol.com
> To: mbcoupes at mbcoupes.com
> Sent: Friday, August 12, 2005 5:40 PM
> Subject: Re: [W126 Coupe] Switch to R134
>
>
> In a message dated 8/12/2005 11:06:17 AM Eastern Standard Time,
> airedale at sbcglobal.net writes:
> So you're going to spend $300, so you can save about $80 on refrigerant. 
> I'm
> an older fellow and learned my math before what was called "New Math" came
> along. But, I fully expect that even with "New Math" you will find 
> changing
> to 134 will cost an extra $220.
> AH, BUT THIS SOUND LOGIC ASSUMES THIS TO BE A ONE TIME EVENT AND WE ALL 
> KNOW
> THIS IS NOT LIKLY TO BE THE CASE.
>
> ROBIN
>
>
>
> The MB Coupes Website!
> W126 SEC Mailing List
> Postings remain property of MB Coupes, L.L.C.
> ----- Original Message ----- 
> From: FOOTFXR52 at aol.com
> To: mbcoupes at mbcoupes.com
> Sent: Friday, August 12, 2005 5:40 PM
> Subject: Re: [W126 Coupe] Switch to R134
>
>
> In a message dated 8/12/2005 11:06:17 AM Eastern Standard Time,
> airedale at sbcglobal.net writes:
> So you're going to spend $300, so you can save about $80 on refrigerant. 
> I'm
> an older fellow and learned my math before what was called "New Math" came
> along. But, I fully expect that even with "New Math" you will find 
> changing
> to 134 will cost an extra $220.
> AH, BUT THIS SOUND LOGIC ASSUMES THIS TO BE A ONE TIME EVENT AND WE ALL 
> KNOW
> THIS IS NOT LIKLY TO BE THE CASE.
>
> ROBIN
>
>
>
> The MB Coupes Website!
> W126 SEC Mailing List
> Postings remain property of MB Coupes, L.L.C.
>
> The MB Coupes Website!
> W126 SEC Mailing List
> Postings remain property of MB Coupes, L.L.C.
>
> The MB Coupes Website!
> W126 SEC Mailing List
> Postings remain property of MB Coupes, L.L.C.
>
>
>