Review on Four Seasons 59986 Charging Retrofit by Lakeem Pickel

Everything else is OK but this requires the Schrader valve to be removed in the fitting which continues. This means you have to completely drain the system, create a vacuum, reinstall the refrigerant and lubricating oil. In my application, I had planned to replace the collector dryer, so I still had to drain the system. But I just wanted to convey information as this was not apparent from the photos or the product description.