R-134a Refrigerant Package 3 Cans Johnsen's R-134a, Oil Charge & Stop Leak This refrigerant package is designed to refill any 1 empty A/C system to capacity as well as lubricate and seal the system. 3 Cans of Johnsen's pure R-134a (12 oz.) 1 Can of Johnsen's R-134a Stop Leak (3oz) 1 Can R-134a Oil Charge (3oz)