Super S Extended Life 50/50 Heavy Duty Truck Antifreeze and Coolant for diesel engines protects your complete cooling system while improving performance, reduces maintenance and lowers overall costs. ‰Û¢ 600,000 miles or 5,000 hours of service‰Û¢ No added SCAs or testing required‰Û¢ Improved performance‰Û¢ Excellent heat transfer properties‰Û¢ Less maintenance and reduced costs‰Û¢ Silicate free formula reduces seal wear‰Û¢ Improved water pump protection‰Û¢ Reduces hard water scale build up.