The radiator was invented and patented by Karl Benz for use on his first horseless carriage in 1885.
It overcame the problem of evaporation cooling, which was boiling away a gallon of water for every hour he operated his single cylinder engine.
>The first honeycomb radiator was designed by Wilhelm Maybach and fitted to the 1901 Mercedes 35 hp model.
Anti freeze became available in the USA in 1905.
The Union Carbide & Carbon Corporation in the USA was the sole producer of ethylene glycol up to 1914. Initially it was used as an anti freeze.
The use of ethylene glycol as an engine coolant was first proposed in England in 1916.
A patent was granted in the USA in 1918 for the use of ethylene glycol to lower the freezing point of water in car cooling systems.
