1.5 liters Pentofrost E is an environmentally friendly Antifreeze CONCENTRATE for multipurpose applications in water-cooled engines. This coolant provides the same exceptional performance as our Pentofrost , , but it is utilizing a more environmentally friendly manufacturing process — now using glycerin in addition to our glycol base. It does not contain any nitrites, amines, or phosphorous containing additives. Pentofrost E protects all material used in cooling systems and is recommended for non-ferrous metals and year-round use.