The concentrated antifreeze is based on carboxylic acids and used for preparation of the operating antifreeze for the temperature range from -65C to -10C. The operating antifreeze made of the concentrate is used in any cooling systems of passenger cars and trucks and as a heat-conveying medium of heating systems. The prepared antifreeze complies with G12+ category by Volkswagen classification, specification requirements of foreign manufacturers, international standards: ASTM D 3306, ASTM D 4985, ASTM D 6210, KSM 2142, BS 6580, SAE J 1034, JIS K 2234. The ready-to-use antifreeze has the following benefits: * Extended service life - 250 000 km * Protection of engine parts (including aluminum), radiators, thermostats, rubber seals from high-temperature and cavitation corrosion * Prevention of engine overheating and freezing * Enhancement of performance and extension of the service life of pumps, thermostats, radiators in 1.5 - 2 times * Prevention of scale and deposit formation * High lubricating properties * Carboxylated additive package. High quality of the product and compliance with the requirements of the international standards ASTM D 3306, ASTM D 4985, ASTM D 6210 are confirmed by the independent American ABIC Testing Laboratories, INC.