how much r 12 do I need to put in my 91 firebird? what is it suppose to be to start with?
all are different ,does it have a sight glass?? do you know how to read ac gauges...is there a problem now?/does the ac clutch kick on??? is it just a little warn??? do you just want to add/top it off??? if so add 1 can to the low side...
R12a is a direct drop in replacement for the old R12 which, if available, is super expensive now! You can buy a recharge kit online at a reasonable cost. But you should have the system leak checked first. Have that done and any leaks repaired before recharging the system. HTH. -Jim
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