ULTRA 1PLUS UltraCool 50/50 Antifreeze Coolant 1 Gal — Pre-Diluted Green, Corrosion & Boil-Over Protection

ULTRA 1PLUS UltraCool Green 50/50 is a ready-to-use antifreeze coolant formulated to protect automotive and heavy-duty diesel engines from corrosion and boil-over while remaining low in silicates and phosphate-free.

This one-gallon, pre-diluted coolant is designed for both passenger vehicles and commercial diesel engines, meeting ASTM D 3306 and ASTM D 4985 specifications. It arrives mixed to a 50/50 concentration so you can pour it directly into the cooling system without measuring water. The formula focuses on long-lasting corrosion resistance, boil-over protection, and safe compatibility with hoses, plastics, and gaskets.

How does this coolant protect my engine from rust and corrosion?

The UltraCool formula uses corrosion inhibitors targeted for metals commonly found in engines and radiators, slowing rust and minimizing pitting. Low silicate levels reduce deposit buildup while the phosphate-free makeup avoids certain types of scale that can impair heat transfer.

Can I use this product straight from the bottle or do I need to dilute it?

This coolant comes pre-mixed at a 50/50 ratio with water, so it’s ready to use right out of the container. That eliminates the guesswork and ensures consistent freeze/boil protection when you top off or refill the cooling system.

• Pre-diluted 50/50 for immediate use
• Saves time—no mixing required
• Consistent freeze protection across climates
• Easy for emergency top-offs and routine maintenance

Is ULTRA 1PLUS UltraCool compatible with other coolants and systems?

The product’s universal formulation was developed to be compatible with major vehicle makes and models and can be mixed with other heavy-duty antifreeze/coolants. Its non-aggressive defoamer and low-reactivity additives are safe for hoses, plastics, and gaskets commonly used in cooling systems.

• Compatible with many brands and colors of coolant
• Safe for rubber hoses, plastics, and gaskets
• Engineered for both automotive and heavy-duty diesel use
• Works across mixed-metal cooling systems

What performance benefits should I expect during operation?

Expect reliable boil-over protection and stable performance under varied operating conditions. The defoamer system keeps foaming in check to maintain efficient heat transfer, while inhibitors provide long-term protection to key cooling system components.

• Boil-over protection for high-temperature operation
• High-quality defoamer minimizes foam and air pockets
• Helps preserve pump seals and hoses for longer service life
• Reduced maintenance from fewer deposits and corrosion issues

Who is this for: ULTRA 1PLUS UltraCool Green 50/50 is intended for vehicle owners, fleet managers, and mechanics who need a convenient, ready-to-use coolant compatible with a wide range of cars, trucks, and heavy-duty diesel engines. It’s a practical choice for anyone prioritizing straightforward maintenance, corrosion control, and compatibility with mixed-metal cooling systems.