Coolants & Antifreeze
From heavy-duty diesel engines to marine applications, we offer comprehensive cooling solutions from industry-leading manufacturers. Extended life formulas, ready-to-use options, and specialty coolants for every application.
Heavy-Duty Trucking
Class 6-8 on-highway trucks
Agriculture & Off-Road
Farm and construction equipment
Automotive
Passenger cars and light trucks
Marine & RV
Boats and recreational vehicles
Heavy-Duty Coolants
Prestone Command
Award-winning heavy-duty antifreeze and coolants specifically engineered to optimize performance of heavy duty engines. Extended drain intervals up to 600,000 miles or 12,000 hours.
Nitrite Free Extended Life Coolant
Designed for all Class 1-8 vehicles, both Heavy Duty and Light Duty. Provides extended protection without nitrite additives.
- All Class 1-8 vehicles
- Nitrite-free formula
- Extended drain intervals
Nitrited Extended Life Coolant
Extended Life antifreeze+coolant designed for Class 1-8 vehicles. Nitrited formula for maximum liner protection.
- Liner pitting protection
- 600,000+ mile protection
- Class 1-8 compatible
Extended Service Interval SCA Pre-Charged
Ready-to-use antifreeze+coolant designed for Class 6-8 vehicles. Compatible with any IAT engine.
- SCA pre-charged
- Ready to use
- Class 6-8 vehicles
2 in 1 Flush & Degreaser
Innovative cooling system cleaner for heavy-duty diesel cooling systems. Removes scale, rust, and grease.
- Heavy-duty formula
- Removes scale & rust
- Degreasing action
Complete Coolant Coverage
Kost USA DefendAL
The DefendAL antifreeze/coolant line has you covered for on-road, off-road, gasoline, diesel, and winterization applications. Comprehensive solutions from automotive to heavy-duty.
DefendAL HD ELC NOAT
Nitrite-free Organic Acid Technology coolant designed for heavy-duty diesel engines requiring extended drain intervals.
DefendAL HD NF ELC
Nitrite-free extended life coolant for heavy-duty applications with excellent aluminum protection.
DefendAL HD NF ELC Red
Red-dyed nitrite-free extended life coolant for heavy-duty diesel engines and mixed fleets.
DefendAL Global HD ELC
Globally approved heavy-duty extended life coolant meeting multiple OEM specifications worldwide.
DefendAL HD Pre-Charge
Pre-charged heavy-duty coolant with SCAs for immediate use in diesel cooling systems.
DefendAL Global Auto ELC
Extended life coolant formulated for global automotive applications with long-lasting protection.
DefendAL DEX-COOL Type
DEX-COOL compatible antifreeze/coolant for GM and other vehicles requiring this specification.
DefendAL Conventional Green
Traditional green coolant formula for older vehicles and applications requiring conventional chemistry.
DefendAL Marine & RV
Specialized coolant formulated for marine engines and recreational vehicles.
Need Help Selecting the Right Coolant?
Our experts can help you identify the optimal coolant solution for your specific application, whether it's heavy-duty trucking, data center cooling, or anything in between.