Tim,
Thanks for the advice. I order the injector you recommended, with some mineral oil ID: 12738 . Is there a method I should follow when injecting the oil;
inject into the low side on the POA valve?, compressor off or on? How much oil injected per application?
Thanks for you help
Ed

Has anyone had any experience with tool, which injects oil in a closed system. It does not use the hi side pressure to inject the oil, but an internal piston pressure of the tool. I would think this would be easier to use than some tools that use the hi side to push the oil. Ed https://www.amazon.co...

Thanks for all the info guys. You guys are great
Ed

Thanks Tim, Does this lube replace the mineral oil that is used on the seals. The system was sealed about 6 months ago and the sight glass, has no bubbles. I tightened the nuts up and I did slow down the oil leak, still watching to it. If I dont need to open the system what is the best procedure to ...

I just rebuilt the original AC R12 system on my 72 Corvette. The rebuilt works well and has not leaked any refrigerant in 6 months. The only issue I have, is the bottom connection on the POA valve is oozing oil on the bottom connection 1 1/4" nut. What would cause the fitting to leak oil and no...