Camco Winterban -100 Degree Antifreeze. A highly concentrated freshwater antifreeze with the same properties as Winterban -50 degrees. Protects to -100 degrees Fahrenheit when used undiluted. May be diluted with water according to the freeze protection chart provided on the bottle label. Non-toxic for potable water systems. Safe and odorless. Liquid is red. Contains propylene glycol.55 gallon drum.