💯 PRESTONE 🇺🇸 Command® Heavy Duty Nitrite Free (Extended Life / Ultra Long Life Antifreeze/Coolant) CONCENTRATED) - 1 Gal / 3.78L

Take on heavy-duty machine cooling system maintenance with the peace of mind of Nitrite Free Extended Life Technology.

Organic Acid Technology (OAT) for use and compatible with ANY OAT Extended Life Heavy Duty antifreeze/coolant in ANY diesel-powered commercial vehicle engine or stationary engine.

Its advanced, patented formulation is a concentrated blend of premium long-lasting inhibitors to provide up to 600,000 miles (965,000 km) or 12,000 hours* of protection against temperature extremes, rust, corrosion, scale, and premature water pump failure.

*TOP-OFF: Will maintain extended life protection when added to any OAT Extended Life antifreeze/coolant.

FLUSH AND FILL: Receive protection for up to 600,000 miles (965,000 km) or 12,000 hours with a complete flush and fill using Prestone Command® Heavy Duty Nitrite Free Extended Life.