Introducing the DEI Heater Hotter 16 oz., a revolutionary solution to slow warm-up times in your vehicle during chilly winter months. This specially formulated additive accelerates the transfer of heat from the engine to the cooling system, ensuring a quicker thaw and reducing engine wear in frigid conditions. With DEI's Heater Hotter, you can expect your vehicle's heater to warm up 50% faster, even in sub-zero temperatures. Designed for universal compatibility, the DEI Heater Hotter can be safely mixed with all types of anti-freeze, making it an essential addition to your winter vehicle maintenance routine. Simply add it to your radiator and experience the difference as you enjoy a comfortably warm cabin without the long wait. Ideal for any automotive enthusiast looking to enhance vehicle performance in cold weather, the DEI Heater Hotter is a must-have for efficient winter driving. <b>Features:</b> * Accelerates heat transfer from engine to cooling system: Accelerates heat transfer from engine to cooling system * Warms up vehicle heater 50% faster in cold conditions: Warms up vehicle heater 50% faster in cold conditions * Safe to mix with all types of anti-freeze: Safe to mix with all types of anti-freeze * Reduces engine wear during frigid temperatures: Reduces engine wear during frigid temperatures * Easy to use - simply add to your radiator: Easy to use - simply add to your radiator