Johnsens Freeze R-134a Plus products make it easy to add refrigerant, lubricant and a performance booster to any R-134a mobile A/C system. These uniquely blended products produce cold air fast by including R-134a refrigerant, a premium synthetic A/C lubricant/conditioner and a leak sealer. Complete A/C service in one easy step! A/C recharging just got easier!