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. Non-toxic virgin propylene glycol formula is safe for all engines including aluminum. Its premium additive package prevents corrosion of aluminum, copper, brass and solder, but will not harm rubber, seals or hose materials. The 3X-died 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 ? please follow label directions for dilution ratios. Provides burst protection to -200°F (-129°C) and freeze protection within a range of -98°F to -103°F (-72°C to -75°C).