HD Expert™ 50/50 Pre-Diluted Extra is the ultimate solution for use in a variety of vehicles. Our formula can be used in both foreign and domestic makes and models as well as light and heavy duty diesel engines, making it ideal for mixed fleet use. HD Expert™ Extra protects your vehicles from rust and corrosion caused by coolant system metals. This formula also provides extended protection against wet sleeve liner cavitation pitting and extreme temperature variations ranging from -37°C to 132°C. It is formulated to prevent overheating in the summer and freezing in the winter when used in accordance with OEM (Original Equipment Manufacturer) and the product manufacturer’s guidelines regarding product dilution. HD Expert™ Extra formulas use advanced OAT corrosion inhibitor technology, which provides extended protection against rust and corrosion.
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