Maintenance Kit Keep recovery and recycling units operating at peak efficiency with a convenient maintenance kit. Contains one quick change filter-drier to be used on both R-12 and R-134a stations, and one 16 ounce bottle of our Premium High Vacuum Pump Oil. For models: 17700A 17700-2K 34700 34700-2K 34800 34800-2K 34900 34288 34788 34788-H 34988… Read more »