THERMOCURE removes even deep rust from the entire cooling system. It uses the latest technology in rust and corrosion removal to completely revitalise automotive cooling systems. Thermocure removes rust scale and deposits from radiators, water pumps, water jackets, engine blocks, and heads. Rust and corrosion act as an insulator and cause vehicles to overheat. This product restores the engine\'s ability to transfer heat to the coolant allowing engines to run cooler and last longer. Contains non-toxic, non-corrosive and non-flammable ingredients, Thermocure will not clog or harm engines. It’s Safe, Simple and Effective ! Directions: Remove coolant and add one quart of  Thermocure per two gallons of water. Run the the vehicle for 3-4 hours up to several days for extensive rust. Do not use in freezing weather. You may drive the car normally during this period. Drain the cooling system and flush twice with water. Add a high quality coolant mixed to manufacture’s specification with water. Concentrated: Mixing ratio – 1 Litre: 2 Gallons Water.