Re: [Chrysler300] A/C conversion marking
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Re: [Chrysler300] A/C conversion marking

I was taught to always hang a tag on any system that has anything in it other than the pure form of whatever it was designed or marked for.  This includes when a "drop in" refrigerant is used.  I am saying all systems, home, commercial, and anything on land, sea and air.  The only reason for this is to try to prevent cross contamination of refrigerants when they are eventually salvaged.

I have used some of them since the price began to escalate on the original formula's.  About 35 years in my case.  I am aware some are very flammable, but not much more than gasoline vapor, but like gasoline they all need a spark or at least an orange hot surface for ignition.

Not telling anyone what to use but there is a huge difference in price and generally instruments are needed to see the difference in performance.

On Thu, Jan 19, 2017 at 1:44 PM, Michael Moore mmoore8425@xxxxxxx [Chrysler300] <Chrysler300-noreply@xxxxxxxxxxxxxxx> wrote:


AI looked into what it took to receive R12 from a shipper, and the forms didn’t seem that hard to do. 
Mike Moore

On Jan 19, 2017, at 7:45 AM, Keith Boonstra kboonstra@xxxxxxxxxxxx [Chrysler300] <> wrote:

I stocked up on R12 back in the day when it was still legal for anybody to buy, and that's been pretty helpful over the years in being able to stay with the old stuff - which is both colder and doesn't have as great a tendency to leak with its smaller molecules. I have enough that I don't think even my great-grandchildren will run out.

I note that Ebay still has a lot of sources that run about $20 a pound, so you can actually fill an entire system for less than $100. Of course you'll have to buy it through your local friendly licensed refrigeration guy, but that's not too hard to do if you offer to front the money for him.

Keith Boonstra


On Thu, Jan 19, 2017 at 6:18 AM, Val Jeffers edward1108@xxxxxxxxx [Chrysler300] <Chrysler300-noreply@xxxxxxxxxxxxxxx> wrote:

By the way, R12 is very hard to come by not to mention expensive !


Sent from Yahoo Mail for iPhone

On Thursday, January 19, 2017, 2:13 AM, 'Rich Barber' c300@xxxxxxx [Chrysler300] <> wrote:


I agree and am wondering if there is some sort of tag or stamping required on older compressors when converted.  I’m pretty sure the fill and monitoring port connections are changed out when the conversion is made and that should signal any qualified technician, minimize mixing refrigerants or using the wrong gauges and charts.


My system was converted by a licensed technician and has no noticeable markings.  It would be easy, neat and safe to “X-out” the 2 in the 12 and add “34”.  A caution sticker on the radiator support might be appropriate.


At the end of the day, there should be zero risk to owner/operator/technician due to a conversion.  Proper marking might trump originality.


Rich Barber

Brentwood CA


From: [] On Behalf Of Val Jeffers edward1108@xxxxxxxxx[Chrysler300]
Sent: Wednesday, January 18, 2017 3:15 PM
To: John Holst <jholst@xxxxxxxxx>; MARK HOPKINS <m.hopkins@xxxxxxx>
Subject: Re: [Chrysler300] A/C metal plate rquest


No good if converted to 134


           Val J

Sent from Yahoo Mail for iPhone

On Wednesday, January 18, 2017, 5:47 PM, John Holst jholst@xxxxxxxxx [Chrysler300] <> wrote:


Mark and all. We have a winner. The link below and Ebay are identical and the same as on my 64 K. I would have guessed that this was a wild dream., but I was wrong. This works for 62-75 or so. Would have to check earlier cars to see what else is available. John Holst...

At 04:33 PM 1/18/2017, you wrote:


Also available here: 



From: "cbilter@xxxxxxxxx [Chrysler300]" <>
To: "Chrysler 300 List" <Chrysler300@xxxxxxxxxxxxxxx>
Sent: Wednesday, January 18, 2017 2:57:35 PM
Subject: RE: [Chrysler300] A/C metal plate rquest


John and all – the tag is reproduced and is on ebay as well as oother sites. Note there are several styles (depends on the year). Pay attention to the “max charge†values. The reproduction tags have the orange color lettering. These are correct for perhaps ’65 up (not sure of start year). 1962 and 1963 had red lettering. A later style is better than a missing tag IMHO. 

Carl B.

From: John Holst jholst@xxxxxxxxx [Chrysler300]
Sent: Wednesday, January 18, 2017 2:41 PM
Subject: [Chrysler300] A/C metal plate rquest

A club member has asked if there is a source of the metal plate attached to the top of the A/C compressor. We have found the other decals for the engine (air cleaner and coolant) but this is different and probably would have to come off a donor car. Any ideas? John Holst...

Do you no where to get the air conditioning spec psi plate?

Harry Torgeson <torg66@xxxxxxxxx>

[Non-text portions of this message have been removed]

Marshall Larson


Posted by: Marshall Larson <granitledge@xxxxxxxxx>

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