[DML] Re: Air Condition at Highway Speeds
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[DML] Re: Air Condition at Highway Speeds

Thanks to everyone for their insights. If R-134a runs at higher pressure, I guess that 
would explain the cycling. It sounds like the path of least resistance would be to go back 
to R-12.

- Geoff

--- In dmcnews@xxxxxxxxxxxxxxx, "Tom Tait" <TTait@xxxx> wrote:
> There are R-12 alternative refrigerants - non CFC based which claim to
> be compatible with R-12.  In theory you can even use them for a top off.
> When these products claim compatibility of that they are certified for
> use in an R-12 system, that only means that they are environmentally
> acceptable - no guarantee of performance.  I have not tried them. I
> guess if someone has gone to the trouble to mass produce and market the
> stuff it may be ok,  but I vote real R-12.
> Tom
> 10902
> -----Original Message-----
> From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx] On Behalf
> Of Marc Levy
> Sent: Monday, July 25, 2005 7:16 AM
> To: dmcnews@xxxxxxxxxxxxxxx
> Subject: Re: [DML] Re: Air Condition at Highway Speeds
> eco-friendly??  Never heard of such a thing.  :)
> the PO probably switched from R-12 to R-134a..  More for financial
> reasons than environmental reasons, but that is a whole different
> discussion.
> If the system was not flushed, and oil replaced then it is possible you
> have damaged the compressor and clogged the system.  R-134a also runs at
> higher pressures, and have seen other DML'ers discuss making other
> modifications to the system for conversion.  I am not familiar with the
> details, because there has never been a good reason to convert.
> For anyone considering this now, check out the prices of R-12 vs R-134a.
> You will see, it is not worth it to convert...  stick with R-12.
> --- geoff_ombao <geoff_ombao@xxxx> wrote:
> > Interesting. The prior owner stated that he switched to the new 
> > eco-friendly refrigerant.
> > Could this be causing the cycling?

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