Prestone® Universal Antifreeze + Coolant, 50/50 Prediluted, provides powerful protection with no mixing required. Safe for all cars and light-duty trucks, this pre-diluted formula works with every coolant type, color and technology (OAT, POAT, HOAT, IAT) to simplify top-offs and maintenance. Patented Cor-Guard® technology helps prevent rust, corrosion, and deposits, keeping the radiator, water pump, and other cooling system components in top condition. With guaranteed protection for up to 10 years or 300,000 miles*, Prestone® keeps engines running smoothly across all seasons and climates.