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:

• The Performance Enthusiast and Racer's Choice.
• Creates a ceramic coating throughout the coolant system to permanently seal leaks.
• Seals castings, improves heat dissipation for better coolant flow and added power.
• Seals head and intake gaskets, cylinder heads and engine block castings of cast iron or aluminum.
• Ceramic Motor Seal will prevent leaks and improve engine performance for years.
• Process requires draining of all coolant/antifreeze and flushing system prior to use.
• Mix with water only. Do not mix with antifreeze.
• 16 ounces.