They sell retrofit kits. It has seals which are compatible with the newer refrigerant oils. And screw on adapters for the charging ports. Replace the filter/drier and flush the system. Replacing the Thermal expansion valve is a good idea also since your renovating it.
The R-134 isn't as efficient as R-12 it isn't the system. But it works fine.
New condensers and evaporators are the same thing. Replacing the seals is the important thing the new refrigerant oil eats the rubber in the old seals.
R-134 runs a higher pressure so it should be charged with 90% of the OEM recommended amount of R-12.
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03-25-2014, 06:53 PM
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