Protection for cooling systems of motor vehicles
    and all other open and closed cooling systems.

Guaranteed quality

ADECO company was founded in 1991 in Novi Sad. Frizantin product group have been produced since 1993 . All products are manufactured from the highest quality raw materials from renowned European petrochemical manufacturers and all product are quality controlled by accredited laboratories.

Antifreeze in general

Experiences of coolant (antifreeze) manufacturers have shown that the demand for antifreeze agents significantly increases with the occurrence of the first colder days. Since throughout the year the cooling systems of internal-combustion engines (ICE) should contain antifreeze of a required quality, this fact is denying that. Our intention is to use these pages to remind and educate customers how to properly use coolants.

The term antifreeze refers to a liquid of low freezing point and high boiling point, placed in the cooling system of internal-combustion engines which is used to lower the temperature of the IC engine, i.e. to maintain the engine in the optimal temperature regime. Coolants can be used in other open and closed cooling systems as well, for which the cooling system manufacturer has recommended the use of these products.

The most important roles of coolants (antifreeze) are:
- Prevention of freezing of the fluid in the cooling system,
- Prevention of corrosion in the cooling system,
- Prevention of scale formation in the cooling system,
- Prevention of cavitation (occurrence of water evaporation and creating a bubble of steam)
- Improved heat dissipation and thus better system cooling.

Coolants consist of a base fluid, additives and water. The base fluid, which is used in the production of coolants for motor vehicles, agricultural and construction machinery is monoethylene glycol (MEG). Monoetilenglycole is the most important component of coolants. This compound determines the boiling point, freezing point and the heat transfer properties of coolants. The freezing point of water and monoethylene glycol is inversely proportional to the concentration of monoethylene glycol, but only up to 60% concentration.

Additives are obligatory components of coolants because only MEG, without additives, is highly aggressive, causes corrosion of ferrous and nonferrous metals. Therefore, multifunctional additive package containing: corrosion Inhibitor, cavitation Inhibitor, deposition inhibitor, defoamer, stabilizer, and buffer (maintains constant pH value) has to be added into MEG.

The role of additives is to:
- Prevent the foam due to the penetration of air or exhaust gases,
- Prevent corrosion and rust,
- Maintain pH value of antifreeze within the prescribed values of 8 to 11 (base).

Types of coolants:
- Traditional antifreeze (IAT): change interval of this type of antifreeze is two years (ASTM D3306-08a, AFNOR)
- Hybrid antifreeze (HOAT) or G11 antifreeze: antifreeze change interval is three years (ASTM D4985; AFNOR NF R 15601) and
- Organic antifreeze (OAT) or G12 + (Long Life): change interval of this antifreeze is five years.

Handling of coolants:
- The basic raw material for the production of antifreeze (MEG) is toxic, so antifreeze is itself highly toxic. Therefore, in the production of antifreeze a component is being added that makes the taste of the antifreeze bitter, in order to prevent any potential swallowing.
- Due to these properties, it is recommended that the cooling system always contains a coolant of the quality recommended by the manufacturer of the cooling system or the engine.
- Mixing of coolants of different qualities is not recommended.
- Bear in mind the change interval of antifreeze because the additives in coolants lose their original properties (wear out) over time, they become acidic and aggressive. Each antifreeze has its own lifecycle.

Should you have any additional concerns, questions or recommendations, please contact our technical sales support:

Dragan Nešković
Sales Manager of industrial lubricants and technical support
Mob. +381 (0)62 415 825
E-mail: dragan.neskovic@adeco.rs; primena@adeco.rs


You can contact us by phone during work hours or by e-mail at any time.


ADECO doo,
Temerinski put 109,
21127 Novi Sad, Serbia


Tel: +381 (0)21 678 00 80
Fax: +381 (0)21 641 16 41


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Saturday: 08h - 12h

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