Polar Preferred Marine Anti Freeze / Coolant

The Ultimate in Safety and Protection

This next generation chemistry from Bright Bay Products provides greater protection and longer life for fresh water cooling systems in a non-toxic formula that exceeds the performance of traditional propylene glycol (1,2 propanediol). Made from 1,3 propanediol manufactured without the use of Petroleum compounds, Polar Preferred offers freeze temperature protection more than 40° lower than the maximum possible for either ethylene glycol or propylene glycol, and burst protection below -200°F.

Meeting the standards of ASTM D7518-09 base coolant for automobile engines and ASTM D7517-09 for heavy duty engines, Polar Preferred Marine Anti Freeze / Coolant offers greater stability and reduced acid degradation at high temperatures when compared to traditional glycols, making it ideal for today’s high performance aluminum engines.

The alcohol-free formula ensure maximum material compatibility with not just copper, aluminum, and brass, but numerous plastic components that can be damaged by many antifreeze products.


From “cradle to gate,” the production of Polar Preferred Anti Freeze / Coolant with consumes 40% less energy and reduces greenhouse gas emissions by more than 40% versus traditional petroleum-based 1,3- propanediol and propylene glycol.

Environmentally Friendly

Assembled from USDA and EPA recognized biobased building blocks derived from renewable resources, making it a significant contributor to the quality and sustainability of life. Polar Preferred Anti Freeze / Coolant is ideal for use around harbors and marinas seeking state “Green Marina” designation.

Preferred by those whose livelihood depends on a healthy aquatic environment!