All Weather Seal from Irontite is a general-purpose, pour-and-go sealer used in cooling systems. It blends with all antifreeze and only activates when it comes in contact with a leak. To use, users shake up the sealer and pour it into the radiator. It also seals cooling system leaks in all metals, plastic and hoses; stops leaks in less than five minutes; stays in the cooling system to prevent future leaks; is non-corrosive and non-clogging; and works in all weather conditions, the company says.