DefendAL Antifreeze HD NitriteFree Red - KOST USA

DefendAL HD Nitrite-Free Red Antifreeze by KOST USA is a premium heavy-duty coolant engineered for modern diesel engines requiring advanced cooling system protection. Formulated with Organic Acid Technology (OAT), this nitrite-free antifreeze delivers extended service life and superior corrosion protection for aluminum, steel, cast iron, and other cooling system metals.

Designed for fleet, commercial, and heavy-duty applications, DefendAL provides dependable temperature control in extreme operating conditions while helping reduce maintenance costs and downtime.

Ideal for trucks, construction equipment, agricultural machinery, and off-road diesel engines.