how do you switch from R-12 to R-134 in a/c system

1989 MERCURY COUGAR
38,045 MILES
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MANIACMAN116
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  • 4 POSTS
need to change a/c over to r-134
May 17, 2012 at 8:02 AM
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MERLIN2021
  • CERTIFIED EXPERT
  • 17,250 POSTS
You suck out the freon and oil, screw on the nee valves and fill with pag oil and.r134a. They have a kit.
May 17, 2012 at 8:38 AM