Heavy Duty Antifreeze & Coolants for Trucks and Equipment

Protect your engines all year round with professional grade antifreeze and coolant products from Custom Truck One Source. Whether you’re running diesel trucks, cranes or vocational equipment, our heavy duty coolants are designed to maintain temperature control, prevent corrosion and extend the life of your entire cooling system.

Why Quality Antifreeze Matters

Antifreeze isn’t just about freeze protection – it’s about system longevity and reliability. The right coolant mix protects aluminum, iron and copper components from corrosion, seals and gaskets and maintains stable engine temperatures under heavy load or long haul conditions. Overheated engines, scale buildup or coolant breakdown can lead to costly downtime and long term damage – making premium coolant a smart investment for any fleet maintenance program.

Engineered for Modern Heavy Duty Systems

At Custom Truck One Source we supply both extended life and conventional coolants for heavy duty diesel engines and mixed fleets. Our inventory includes ethylene-glycol and propylene-glycol based antifreeze, hybrid organic acid technology (HOAT) and fully organic acid technology (OAT) blends. These products meet or exceed OEM performance standards for Cummins, CAT, Detroit Diesel, International and other leading manufacturers – so you know they’ll be compatible with modern low emission engines.

Ready to Use and Concentrated Options

We offer pre-mixed 50/50 coolant for convenience and consistent freeze protection down to -34°F and concentrated blends that can be mixed to your climate or application. Every formula provides superior corrosion resistance, scale control and cavitation protection to keep radiators, water pumps and liners in top condition.

Benefits for Fleet and Equipment Operators

For fleets, standardizing coolant type across all vehicles simplifies maintenance and reduces contamination risk. The right antifreeze also extends service intervals, minimizes additive drop out and maintains protective films that prevent cylinder liner pitting – a common cause of premature engine wear.

Our coolants perform beyond the highway – for utility fleets, crane trucks, off road equipment and service bodies. From extreme heat to freezing conditions Custom Truck One Source coolants keep your vehicles running safely and efficiently all year round.