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The best way to fill the AC is to have a set of gauges and use normal r134. Most of the gauges on those small full fans are not accurate. The low side port is on the passenger side. It should have a blue cap on it
Don't use anything with a sealant in it. It will clogged up the orifice tube.
I have hear that too. But, why do they make it? Not saying that's wrong, but 90% of what they carry at the parts store seems to say it has leak sealer in it! I think oriellys carrys one brand that doesn't.
To make a sale. If you just got quoted 500 to have your a/c fix and you know there is a 10 dollar can of crap on the shelf that will so called fix your leak which one would you do ?