Antifreeze concentrate consisting of ethylene glycol and an additive system unconventional free from nitrites, amines and phosphates. Before use must be appropriately diluted with water in proportion from 30% to 50%. It is recommended to not fall below the concentration of 30% because, in that case, would not have the protective properties of the mixture more guaranteed. The recommended dilutions, can be used in the cooling circuits of any engine (gasoline or diesel) mounted on cars, commercial vehicles, agricultural and construction. It also suitable for static or marine engines and for water-cooled motorcycle engines.