The Ultimate Protection for Your Engine

Fleetguard 50:50 Coolant is a premium pre-diluted engine coolant, factory-mixed at the ideal ratio of 50% high-quality ethylene glycol-based antifreeze/coolant and 50% deionized purified water. This ready-to-use formula eliminates the guesswork and hassle of manual mixing — you pour it straight from the container, delivering perfectly balanced protection against freezing in extreme cold, overheating in extreme heat, and corrosion all year round.

Manufactured by Fleetguard — a world-renowned brand under Cummins Inc., synonymous with genuine quality and reliability in engine filtration and fluids — this coolant is engineered to meet and exceed the strictest industry standards. It is suitable for passenger vehicles, commercial trucks, buses, heavy-duty equipment, and industrial engines across a wide range of brands.

Key Benefits of Fleetguard 50:50 Coolant

✅ Pre-Mixed & Ready to Use

Precision-mixed at the optimal 50:50 ratio at the factory, so you never risk incorrect dilution. No measuring, no mixing, no guesswork — simply pour directly into your radiator or coolant reservoir. Saves time and ensures consistent protection every time.

✅ Extreme Temperature Protection

The balanced 50:50 formulation delivers dependable performance in all climates:

• Freeze protection down to -37°C (-34°F) — safeguards your engine even in severe cold or high-altitude conditions.
• Elevated boiling point up to 106°C–108°C (223°F–226°F) — resists boil-over and maintains stable operating temperature even during heavy loads, long journeys, or stop-and-go traffic.

✅ Superior Corrosion & Rust Protection

Formulated with advanced inhibitor technology, Fleetguard 50:50 Coolant creates a protective barrier across the entire cooling system. It effectively prevents rust, corrosion, scale formation, and cavitation on cast iron, aluminum, copper, brass, and solder components — keeping water pumps, cylinder heads, engine blocks, hoses, and gaskets safe and durable.

✅ Broad Material Compatibility

Safe for mixed-metal cooling systems and fully compatible with most elastomers, seals, and gaskets found in modern and legacy engines. Recommended for Cummins engines and compliant with specifications of major global engine and vehicle manufacturers.

✅ Long Service Life

Stable, long-lasting chemistry maintains its protective properties throughout the full service interval. When used as directed, it provides extended protection without frequent replacement — helping reduce maintenance costs and downtime.

✅ Engineered for Peace of Mind

Every batch undergoes rigorous quality testing. Fleetguard 50:50 Coolant meets original equipment (OE) performance requirements, so you can trust it to protect your engine exactly as intended by the manufacturer.

When to Use Fleetguard 50:50 Coolant

• ✅ During scheduled coolant flush and replacement according to your vehicle’s maintenance schedule.
• ✅ After cooling system repairs, flushing, or component replacement.
• ✅ For topping up low coolant levels — always top up with the same pre-mixed formula.
• ✅ Ideal for passenger cars, light commercial vehicles, heavy-duty trucks, buses, construction equipment, and stationary industrial engines.

⚠️ Important Usage Note: Do not add tap water, well water, or untreated water to this coolant. Impurities cause scaling, corrosion, and will weaken freeze/boil protection. Since Fleetguard 50:50 is already perfectly diluted, use it undiluted for best results.

Why Choose Fleetguard?

Fleetguard is the OE (Original Equipment) choice for Cummins and countless fleets and professionals worldwide. When you choose Fleetguard 50:50 Coolant, you’re choosing more than just a fluid — you’re investing in proven formulation, strict quality control, and decades of engineering expertise that keeps your engine running cooler, cleaner, and longer.

Don’t compromise on one of your engine’s most critical systems. Protect your investment with Fleetguard 50:50 Coolant — the smart, convenient, and trusted choice for year-round engine protection.