Final Charge 50/50 Pre-diluted Global Extended Life Coolant is a 50/50 mix of Final Charge Global Extended Life Coolant and deionized water. It features a patented Organic Acid Technology (OAT) formula that delivers total cooling system protection for 600 000 miles of on road use (6 years of 12 000 hours or off highway use) without the use of Supplemental Coolant Additives (SCAs). The only maintenance required is the addition of Final Charge Extender at approximately 300 000 to 400 000 miles of on road use (3 years or 6 000 hours of off-highway use). When required top-off the cooling system with Final Charge or Final Charge 50/50 Prediluted Global Extended Life Coolant/Antifreeze only.