Camco BanFrost 2000 Marine Engine Antifreeze - 1 Gallon Low toxicity biodegradable engine protection. Use for winter storage of raw water cooled engines and as a permanent antifreeze/coolant for fresh water cooled systems. Replaces ethylene glycol: safer for people, pets and wildlife. All season/all purpose propylene glycol formula with CAM-3 inhibitor package offers superior corrosion protection. Sold individually.