Zerex G40 Phosphate and Nitrite-Free Antifreeze/Coolant 1 GA

Unmatched Freeze Protection and Anti-Boil Performance

Our innovative Si-organic acid technology provides unparalleled protection against freezes and boils, outperforming industry standards. This ensures your cooling system operates at its best, even in extreme temperatures.

Corrosion Resistance

Our formula resists corrosion and rust, safeguarding all cooling system metals, including aluminum. This means your engine remains protected and your cooling system stays in top condition.

Advanced Leak Prevention

High-quality additives ensure no leaks, without harming gaskets, hoses, plastics, or your original vehicle finish. This maintains the integrity of your cooling system and prevents costly repairs.

Customizable Formula

For optimal performance, mix our violet concentrate formula with clean tap water or demineralized water in specific ratios: - 50/50 for temperatures ranging from -34°F to 265°F - 60/40 for temperatures from -62°F to 270°F - 70/30 for temperatures from -84°F to 267°F

Exceptional Warranty

Enjoy a 5-year/150,000-mile guarantee, protecting your engine against failure caused by freeze-ups or boil-overs. This ensures peace of mind and long-term reliability.

Proven Performance

Our formula undergoes rigorous lab testing and real-world fleet testing. This commitment helps car and truck owners achieve optimal engine performance and maximize their engine's lifespan.

Safety and Flavoring

Contains 30-50 ppm of denatonium benzoate, a bittering agent that ensures accidental ingestion is highly unpleasant, enhancing safety when working with cooling systems.