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:

• Opens and cleans out plugged heater cores.
• Clears out gelled Dex-Cool with a simple flush.
• Diesel Oil cooler failure - cleans cooling system in single flush.
• Fuel Tank Cleaner - Use before installing a new fuel pump to prevent premature pump failure and warranty claims.
• Removes Ethanol/Bio Fuel build up, rust, scale, oils and other sludge from Fuel Tank.
• Safe for use on cast iron, aluminum, brass and plastic
• For improved coolant flow and temperature control, always flush with Thoro-Flush for the best possible results.
• Works with all coolant exchange machines.
• Thoro-Flush is a concentrated powder and the most powerful flush available.
• For flushing auto cooling and fuel systems, removes rust & sludge.
• 16 ounces.
• Thoro-Flush is a concentrated powder and the most powerful flush available.