Engine Coolant Additive Heat Hotter Antifreeze Additive; 16 oz.; FEATURES: Accelerates Transfer Of Heat From Engine To Heater Improves Engine Warm Up-Up Time By 50 Percent Simply Add To Radiator Safe With All Types Of Anti-Freeze Helps Reduce Engine Wear All Radiator Relief coolant additives are specially formulated to reduce the bubbles that form on hot metal surfaces, such as cylinder heads, known as surface tension. Radiator Relief improves heat transfer from the engine to the coolant while reducing cavitation and scaling. Design Engineering, Inc.(TM) is one of the foremost suppliers of thermal tuning product featuring products for racers, street performance enthusiasts, and hobbyists alike. In addition to supplying the performance aftermarket with thermal tuning products, Design Engineering serves the needs of the powersports, marine, industrial and commercial industry markets the world over.