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Re: [Shop-talk] trucks a/c

Subject: Re: [Shop-talk] trucks a/c
From: David Scheidt <>
Date: Thu, 27 May 2010 10:01:43 -0400
On Thu, May 27, 2010 at 9:47 AM, Pat Horne <> wrote:
> I have no experience with it personally, but it is my understanding that
> Freeze 12 is colder than R-134a IN A R-12 SYSTEM. It does not require a
> license to buy, at least here in Texas. I have no idea what is required to
> convert from R-134a back to Freeze 12. I suspect the oil would need to be
> changed and the system cleaned out.

He doesn't have an r12 system that's been converted.  He's got an
R134a system that doesn't work right.

Take it to shop that knows what they're doing.  Insuffecient
refrigerant charge is the usual culprit for this.  Did they evacuate
the system and refill it?   Of just stick gauges on it and say "yup,
it works."?

David Scheidt
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