We formulate Cool Down coolant additive not just for gasoline engines. It also works excellent as a diesel coolant additive. It improves the performance of coolant and is safe for all radiator systems. Its ideal for racing, street, RV, and tow vehicle applications. Our product reduces cylinder head temperatures up to 75 degrees Fahrenheit and decreases engine temperature up to 30 degrees Fahrenheit! Cool Down increases coolant flow for better heat transfer.
