Do I need R12 or R134?
thank you
Joy
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I just tested what the 2000 Pontiac Montana's manual says and the automatic...
If I recall its like 2 1/2 lbs but you need to evacuate and use gauges...
Thank you everyone for your information and help. Wolfgang, this seems to work,...
Look on the AC info sticker under the hood..
My guess.....R-134A
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