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Formulated to maximize horsepower. Revolutionary additive package maintains optimum engine temperature. Ideal for all water-cooled engines; exceeds OEM specs. Seals pinhole leaks or cracks. Protects against boil-over to 256°F and against freezing to -26°F. No silicates, phosphates or other ingredients that clog radiators. Available in 64-fluid ounce bottles, 4 per case.