Do you realize the cost to properly convert to R134 from R12 so that the system doesent disolve itself from the inside out from aacids formed within 2 years...is pricey and labor intensive.

And even a properly converted system will not cool as well on a 90 degree day as R12 will....There are more things to think about the just what the refrigerant costts...that is the cheap part of the equasion.

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Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
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Section 609 MVAC Certified
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"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche