Engine Coolant

Modern available engine coolants are engineered to perform reliably across a wide temperature range while offering corrosion and scale protection. Commercially, engine coolants are available in several types, including ethylene glycol–based and propylene glycol–based formulations, offered as concentrates or ready-to-use premixed solutions. Common technologies include IAT (Inorganic Additive Technology), OAT (Organic Acid Technology), HOAT (Hybrid OAT), and Si-OAT, each developed to meet specific OEM requirements. Typical components include glycols for freeze and boil protection, deionized water, corrosion inhibitors, anti-foaming agents, and stabilizers that protect aluminum, copper, cast iron, and rubber components. Engine coolant is widely used in automotive cooling systems, heavy-duty diesel engines, generators, construction machinery, and stationary industrial engines, ensuring optimal thermal balance and long-term system reliability.