Irontite has a 60-year track record as a leading US manufacturer of Coolant System Additives used by commercial accounts, professional installers and do-it-yourselfers across the globe. They have learned through their experience that Irontite Thoro-Flush and All Weather Seal are the most effective coolant additives and cleaners they can use. Simply stated "They work when others won't."

Product Features:

• Pour-and-Go Formula does not require flushing of coolant mixture.
• Stops Coolant Leaks in Minutes.
• Stops Head/Intake gasket, radiator and other coolant system leaks.
• Permanently blends with all coolants/antifreezes to stop existing and future leaks.
• Will not clog heater cores.
• Micro fibers detect and stop leaks at their source.
• Formulated to work in the most extreme weather conditions, HOT or COLD.
• Ideal for Stationary Engines, Auto/HD Truck, Construction/Mining Equipment, Farms/Fleet
• All Weather Seal has been used with confidence by Professionals for over 60 years, "Because It Works".
• Works in 5 minutes.
• Use with glycol coolant.
• 16 ounces.