A/C Freon - Freeze 12?
Thread Starter
Newbie
Joined: Dec 2003
Posts: 10
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From: Birmingham AL
1990 300E
A/C Freon - Freeze 12?
My compressor went out on my '90 300E a while back and I had the system changed over to R134. Now it doesn't cool any where near as well as it did on R12. Has anyone tried this R12 alternative "freeze 12"? Does it work as well as the old R12? Is it friendly to a M/B system?
Super Member
Joined: May 2003
Posts: 696
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From: Motor City
95 E320 Cabriolet, 108K
I forget what's in Freeze 12. If this is the propane/butane mix, I've heard wonderful things about it. If you do go this route, the entire system will have to flushed out with a new receiver/drier, and fresh, compatible lubricant will need to be used.
This link may help you:
aircondition.com
This link may help you:
aircondition.com
Last edited by Kestas; Apr 11, 2004 at 10:01 AM.
MBWorld Fanatic!
Joined: Aug 2002
Posts: 1,005
Likes: 33
From: Germany
'00 S320 W220, '98 A160 W168/ sold in 2005 '86 260 E W124 '90 260E W124
I think your A/C problem is not the change from R12 to R134. I had my systems altered to R134 (2 cars W124 260E) and it worked perfect, no loss of performance at all. Important is to have the dryer bottle replaced also, and the system tested for leaks with a fluorescend marker.
Super Member
Joined: May 2003
Posts: 696
Likes: 4
From: Motor City
95 E320 Cabriolet, 108K
Air conditioning demands in Alabama are considerably greater than in Germany, so I agree with both Bama and bamberger. I have converted a number of cars successfully, which cool well here in Michigan.
The problem as I understand it is that MB condensers don't lend themselves well to conversion from r12 to r134. Plus, the effectiveness of r134 diverges from r12 at higher temperatures, noticable in climates such as Alabama in the summertime... even with the conversion performed perfectly.
The problem as I understand it is that MB condensers don't lend themselves well to conversion from r12 to r134. Plus, the effectiveness of r134 diverges from r12 at higher temperatures, noticable in climates such as Alabama in the summertime... even with the conversion performed perfectly.
