FS Extended Life OAT Coolant/Antifreeze features a patented Organic Acid Technology (OAT) formula that delivers total cooling system protection for 1,000,000 miles of on-road use (8 years or 20,000 hours of offhighway use)* without the use of supplemental coolant additives (SCAs). When required, top off the cooling system with FS Extended Life or FS Extended Life 50/50 Pre-Diluted Coolant/Antifreeze.

FS Extended Life is a phosphate-free, silicate-free, nitrate-free, borate-free coolant that uses organic corrosion inhibitors to provide superior wet sleeve liner cavitation and corrosion protection for typical cooling system metals.

Features and Benefits: 

• Compatible with most coolant technologies
• Eliminates the need for SCAs and coolant filters, saving time and money
• Delivers total cooling system protection for service life:
  • Over-the-road protection: 1,000,000 miles or 8 years
  • Off-road protection: 20,000 hours or 8 years
• Provides superior long-term elastomer compatibility
• Long-term corrosion protection for aluminum, copper-brass, cast iron, steel, and solder alloys
• To realize FS Extended Life OAT Coolant’s extended service life and protection, contamination levels should be kept below 25%.

*To maintain the protection provided by FS Extended Life OAT Coolant/ Antifreeze, the proper level of patented inhibitor system must be present. Proper level can typically be achieved by topping off with FS Extended Life OAT Coolant/Antifreeze.