Lower Temperatures. More Power. One Bottle.

AMSOIL DOMINATOR® Coolant Boost is a cooling system additive that uses proprietary tiered surfactant technology to improve heat transfer, reduce engine operating temperatures by up to 25°F, and protect all six common cooling system metals from corrosion.

Your coolant's job is to pull heat away from engine components and release it through the radiator. Most coolants leave small air gaps between the liquid and metal surfaces that slow that transfer down. Coolant Boost eliminates those gaps. Its three-tiered surfactant system — each surfactant operating at a different temperature range — maximises liquid-to-metal contact across the entire operating range, forcing more heat out through the radiator faster. The result: lower temperatures, more efficient combustion, and real measured horsepower gains.

Dosage Reference

Always add to a cool, off engine. Pour into the radiator directly — not the overflow tank. Do not exceed the recommended dosage; AMSOIL confirms that exceeding dosage provides no additional performance benefit. Do not use distilled water alone (without antifreeze) in non-racing applications due to freezing risk. For race applications using straight water, monitor the pH colour indicator and re-dose when the mixture changes from pink to clear. Refer to the AMSOIL product data bulletin for complete guidance.