UltraCool IAT Universal Antifreeze + Coolant CONCENTRATE (Yellow) is a premium quality antifreeze + coolant, ethylene glycol-based, phosphate and amine free, designed to optimize engine longevity. For use in all makes of vehicles, from the smallest aluminum passenger car to the light-duty diesel engine made by manufactures such as Chrysler, Ford, GM, Hyundai, Kia, and many more requiring a low silicates yellow formula with inorganic additive technology (IAT). Ultra1Plus UltraCool IAT Universal Antifreeze + Coolant CONCENTRATE (Yellow) offers comprehensive protection against freezing and overheating, safeguarding your engine's performance. Premixed with a specialized inorganic additive, it fights corrosion, scaling, and rust, ensuring the cleanliness and proper functioning of cooling system components, including aluminum parts. Our IAT formula guarantees year-round protection for your entire cooling system up to 50,000 miles or years, whichever comes first.