[DML] Re: What is involved to convert R134a back to R12
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[DML] Re: What is involved to convert R134a back to R12

You seem to have done all of the hard work. 
They will need to flush out the system of all of the old oil. 
They will then need to put a vacuum on the system, to ensure it will 
hold a charge. If it does, from there they will pour in the R-12 oil 
in the top of the AC compressor, and then add the R-12.

It will cost you significantly more to have R-12 put back into the 

I still have R-12 in my system


--- In dmcnews@xxxxxxxxxxxxxxx, "sweetp01569" <paul.sweet@...> wrote:
> I have an appointment to have my AC system charged tomorrow.  The 
> previous owner did a $34 conversion from R12 to R134a, and am not 
> how much of the R12 oil he properly removed when he converted.  I 
> on the posts that sticking with R12 is still better in the long 
> I replaced my evaporator, accumulator, low pressure switch and 
> tube with the new variable orifice offered by SpecialT Auto.  What 
> involved if I were to ask the AC shop to convert back to R12?  Is 
> simply a matter of changing the service port back, draw a vacuum 
> recharging with R12?
> Thanks,
> Paul
> vin 10944

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