AMSOIL DOMINATOR Coolant Boost (RDCB) is designed to reduce corrosion and significantly enhance heat transfer in cooling systems. One of the overlooked benefits of better heat transfer is much quicker engine warm up in winter conditions, which is noticed when the vehicles defroster works much sooner.
To understand how DOMINATOR Coolant Boost reduces engine 
warm-up times in cold weather, it’s important to understand the fundamentals of an engine’s cooling system and how Coolant Boost’s proprietary tiered-surfactant technology works. The same tiered-surfactant technology that aids in reducing engine operating temperatures also decreases engine warm-up times.
In a vehicles cooling system, the goal is to quickly and effectively move heat away from engine components, permitting the engine to run at a safe, controlled temperature. An effective cooling system reduces stress on all aspects of the engine, including the oil. Alternatively, a corroded cooling system that transfers heat ineffectively will eventually lead to engine overheating, motor-oil breakdown and catastrophic failure.
A surfactant reduces the surface tension of water and antifreeze, allowing closer contact with metal parts. The closer contact increases the coolant’s efficiency in transferring heat away from hot engine parts and out through the radiator and fan.
Many leading coolant additives contain only one surfactant, limiting their temperature ranges and effectiveness.
AMSOIL DOMINATOR Coolant Boost uses three surfactants, each designed to operate in a different temperature range to increase liquid-to-metal contact from the time the vehicle starts to the time it reaches operating temperature.
Graphic A illustrates how each surfactant in Coolant Boost’s tiered-surfactant technology id designed to provide optimal performance over a wide temperature range, while competing products with only one surfactant are limited to performance in a single temperature range.
Graphic B outlines controlled testing of AMSOIL Dominator Coolant Boost with a 50/50 antifreeze/water mix. When a cooling system reaches 120°F, you feel warm air coming out of the defroster. The time it takes to reach this temperature with Coolant Boost is reduced by 49 percent compared to the 50/50 antifreeze/water mix alone. The time required to warm the cooling system to 180°F is reduced by 54 percent.
Through the use of tiered surfactants, AMSOIL Dominator Coolant Boost delivers quicker warm-up times in the winter and reduced engine temperatures in the summer, making it an excellent choice for year-round use.