FS Extended Life 50/50 Pre-Diluted Coolant/Antifreeze is a 50/50 mix of Extended Life Coolant and deionized water.
FS Extended Life 50/50 Pre-Diluted Coolant/Antifreeze should be used when topping off cooling systems filled with Extended Life Coolant to ensure proper inhibitor levels are maintained. FS Extended Life should be maintained between a 45% to 60% coolant and 55% to 40% water mix for optimal performance.
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 off-highway 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.