A/C issue

[mikelj@xxxxxxx]

The A/C works OK in my '64 Polara 500, but there are bubbles in the sight glass and it isn't as cold as it should be.  Since it is low, I want to recharge, but before I do I am wondering if it is the new R134A, or the old original R12 refrigerant.  I asked the previous owner about it and he doesn't know which is in it.  I will convert to R134A if it is R12, but am wondering if I will screw something up if I convert and it doesn't need to be, or if I recharge with R134A and it is R12 will that mess it up.  My question is will it mess it up to convert if it is already R134A, and is there anyway to tell what refrigerant is in it?  Thanks for any help.

Mike in New Mexico




 
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