- Sep 19, 2001
- 4,711
- 2
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I can assume that my 91 Integra has an R12 unit since all cars after 1993 were supposed to have switched to R134; however the a/c in my car could've been converted to R134. Summer is on its way and I want to recharge the unit. Any way I can tell or would I have to take it to a shop?
