Coolflow MC20 is a Ready to Use Non-Toxic Antifreeze that protects to -20°C. Especially formulated to winterise toilets and wastewater systems in Pleasure Craft, Canal Barges & Narrow Boats, Yachts and other Marine Craft.

Coolflow MC20 is based on propylene glycol and contains a blend of synergistic corrosion inhibitors that will protect mild & stainless steel, aluminium, copper, brass and cast iron to BS6580 corrosion standards, CoolFlow MC20 also contains scale and biological inhibitors to help prevent fouling.