... -rust and evironment friendly; Not Replacing, lifelong use. BST99 antifreeze liquid Antifreeze Coolant Ice point:-40°C, boiling point: 190 °CWaterless ... coolant contains water, leads to water scale and rustness.Won’t boil, high boilingpoint upto 190°C , no vapour pressure ... , then the temprature will rising, cause the engine scuffing.Won’t freeze, low icepoint to -40°C ,good thermal conductance, easy ...