Tectaloy unlimited coolant concentrate is the latest development in extended life technology, offering maximum Anti Freeze/Anti Boil and corrosion protection for your cooling system. Recommended for all vehicles to current model manufacturing standards including petrol, diesel, gas, supercharged, turbocharged and stationary engines. The unique formula of Tectaloy Unlmtd Concentrate is designed to meet the everyday demands of petrol and diesel vehicles. Its unique formula allows extra cooling system protection when required, such as four-wheel driving, towing heavy trailers or caravans. Silicate, phosphate and amine free. An excellent choice for high-performance multi-valve engines. +129°C Anti Boil Protection and -37°C Anti-Freeze Protection. Contains ethylene glycol 1065g/Litre. Type A coolant. OAT corrosion inhibitors. 1L concentrate makes up to 4L of coolant (25% Ethylene Glycol). Size: 5 Litre, Colour: Green.