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R12 Drop in replacement refrigerant

Heating and Ventilation

Vehicle Information: Year: 1990; Body Type: Coupe; Total Mileage: 85000;

Has anyone had any experience with any of the R12 replacement refrigerants such as FR-12, Freeze 12, and/or Hor Shot (R-414B). All of these are stated to be direct replacements for R12 with no change outs of the seals required. The EPA even has a web page that shows these as valid "drop-in" replacements. If true, big $$$ savings compared to the R134 retrofit.

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