Durex's® anti-freeze/coolant products provide dependable and everyday protection of your vehicle's cooling system, while meeting or exceeding industry specifications. You can trust Durex® to keep your vehicle at its excellent with year round protection against freeze, boil over, rust and corrosion. Durex® anti-freeze/coolant products are compatible with all major American brands of conventional anti-freeze/coolants. The Durex® range of anti-freeze/coolant products offer dependable protection of your vehicle's cooling system in a variety of formulas - conventional, extended life, heavy-duty SCA pre-charged and heavy-duty extended life. These formulas meet or exceed industry specifications and help provide optimal performance of your cooling system. These formulas provide freeze and boil over protection and specifically protect against corrosion of system metal. Each formula contains a high quality defoamer system, not harmful to hoses, plastics or gaskets.