This ready-to-use HOAT (Hybrid Organic Acid Technology) coolant is designed for year-round use in modern engine cooling systems that require mono-ethylene-glycol antifreeze. It provides reliable and long-lasting protection against overheating, freezing, and corrosion. The advanced hybrid formula immediately protects metals like aluminum, copper, brass, cast iron, and steel, while organic additives activate only when corrosion begins, helping extend engine life. It offers excellent heat transfer, resists foam and deposits, and remains stable throughout its service life. The coolant is safe for hoses, seals, rubber, and plastic parts, works well even with hard water, and includes a fluorescent dye to easily detect leaks under UV light. It is NAP-free (no nitrates, phosphates, or amines) for safer and cleaner engine protection.