Starbrite BIO-SAFE Non-Toxic All Year Antifreeze

• Non-toxic Year Around propylene glycol Anti Freeze
• Non-toxic formula provides superior year round protection for all engines. Protects engines from freeze up and boil over while providing excellent corrosion protection
• Biodegrades quickly in the environment and is easily broken down by sewer treatment systems

Essentially non-toxic propylene glycol based antifreeze with a special corrosion fighting additive package, which protects all engine cooling system parts including aluminum. Protects against freeze-up down to -34 degrees F (-37 degrees C) when mixed with water in the recommended 50/50 dilution ratio. In a system pressurized by a 14 PSI radiator cap, it will protect against boil over to 260 degrees F (127 degrees C).