Star brite® -200°F (-129°C) Non-Toxic Antifreeze provides the ultimate in extreme cold weather and corrosion protection for drinking water systems and all engines. Its premium additive package prevents corrosion of aluminum, copper, brass and solder, but will not harm rubber, seals or hose materials. The 3X-dyed blue color provides excellent blow-through visibility. Formulated with virgin, non-toxic USP-grade ingredients. It contains no alcohols. This product is ready-to-use or may be diluted.Star brite® -200°F (-129°C) Non-toxic Antifreeze will provide burst protection to -200°F (-129°C) and freeze protection within a range of -98°F to -103°F (-72°C to -75°C).