HD Expert™ Concentrate Extra is the ultimate solution for use in a wide range of vehicles, including both foreign and domestic makes and models. It is suitable for both light and heavy duty diesel engines, making it a versatile option for mixed fleet use. HD Expert™ Extra protects your vehicles from rust and corrosion for all coolant system metals, including aluminum. 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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