I've got a slow leak in the air conditioning system. Its close to the end of summer and I don't feel like spending large sums of $$$ to fix it. I'm thinking of going down to the locale auto supply store and buy a can of R134A freon and a hose and add one can of freon. I use to do this with other cars that had the R12 freon with a sight glass. I'd just add until the bubbles in the fluid going through the sight glass were gone.
With no sight glass on this R134A system, how is it done? Any recommendations?
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