[W126 Coupe] R12 freon vs R134 issue

[Iain Gunn]

Have your system evacuated and have a vacumn pulled on it, go to Wal-Mart of Kmart and buy a duracool kit, or similar, in Canada about $50 fill hose, gauges and 2 containers. You will need to buy the adapter for your low pressure side. http://www.duracool.com/Duracool/partbrass.html It justs screws on, tighten with wrench and fill as per instructions. If you want more info, go to http://www.duracool.com/ and read up.

Testimonial from a friend that I told him about it.
"Hey Iain, I just wanted to let you know that I did the Dura cool thing in my car, and it worked great. ICE COLD! I was really happy. Canadian Tire just had a special where you buy the valve with gauge and 2 cans for 49.99, so I bought a kit. My buddy did my Audi, and now I've got a kit for myself -- I'll be doing my girlfriends Focus very soon. The CDN tire kit is Red Tek or something... not DuraCool brand, but it's the same stuff I believe... 12a or something. 
So nice to have chilling cold air conditioning again! :)"
Stop messing around with Freon, 7-8 years I;ve been using NO issues.

  ----- Original Message ----- 
  From: Markus Meyer 
  To: Mercedes Coupes Mailing Lists 
  Sent: Tuesday, July 22, 2008 3:59 PM
  Subject: Re: [W126 Coupe] R12 freon vs R134 issue


  A lot has been written up on R290 as an alternative, compatible with R12, see here:

  http://www.benzworld.org/forums/w126-s-se-sec-sel-sd/1387442-using-propane-instead-r-12-c.html

  Markus Meyer
  mfm at meyerprobateproperties.com
  www.meyerprobateproperties.com
  Meyer Probate & Properties, LLC
  484-919-9762



    -------- Original Message --------
    Subject: [W126 Coupe] R12 freon vs R134 issue
    From: JohnJayKimrey1 at aol.com
    Date: Tue, July 22, 2008 3:47 pm
    To: mbcoupes at mbcoupes.com
    Cc: JohnJayKimrey1 at aol.com


    Hello:
    The a/c sytem is functioning fine on my 89 sec except the vent temp. isn't what it should be (cool air but not cold). I want to have the sys. checked for leaks/functionality and recharged with R12 but all but one shop says that I have very little choice but to convert to 134 because they say they either can't get the R12 or say it is $100.00 per lb. plus labor to install making it too expensive to maintain a R12 sys.I don't want to convert to 134 for the reasons mentioned on this site but I feel compelled to. Will someone enlighten me on the general availability of R12  to Repair shops and does the $100.00 price tag seem reasonable? I think it should be more like $45.oo/lb..I live 30 miles from Charlotte N. C. Also, what is R12A and is it an acceptable substitute for R12 and can the two be mixed in the system.? If I am stuck converting what parts are a must change and what parts are recommended assuming they are all now functioning normal.Your valued inputs are appreciated.
    By the way the system was evacuated, new o ring kit installed and recharged with R12 in 2004(service record). The car has 80k miles but has been garaged for the last 4 years.I purchased the car last year.
    Jay Kimrey





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