Ecolubrium Full Strength Antifreeze is a concentrated product which must be diluted with clean water before use. It is a nitrite, amine, silicate, borate and phosphate free ethylene-glycol based product manufactured to BS6580 and provides freezing protection to minus 36 degrees when mixed 50:50 with water. It can be diluted even further if desired to give a different freeze point or when used as a summer coolant.