Antifreeze is an anti-freeze liquid that has recently replaced antifreeze. Both of these substances are invariable companions of automobile engines. Any of these coolants must be changed regularly, which means that you need to be able to choose it.
Instructions
Step 1
The characteristics of antifreeze from different manufacturers have some differences. The main requirements for this liquid are good heat dissipation, high boiling and evaporation temperatures. Since antifreeze is aggressive to metal, various additives are added to its composition. There is no single recipe, so each manufacturer focuses mainly on the maximum allowable amount of additives. Hence the difference in the quality and properties of antifreeze.
Step 2
The car enthusiast should know that the optimal composition of the coolant is as follows: 2% additives, 53% ethylene glycol, 45% water. But, despite the fact that the antifreeze contains water, it can not be diluted with it in any case.
Step 3
For domestic small cars, antifreeze of the A40M and A65M brands is optimal. These fluids are suitable for use in various climatic conditions. The numbers indicated in the brand mean the temperature threshold for the freezing of the liquid. If the technique is used in a harsh climate, it is recommended to choose an antifreeze that is as resistant to cold as possible, the brand of which contains "70".
Step 4
When choosing a coolant, a motorist may be confused by the color of antifreeze from different manufacturers. It can be blue, blue-green, red. You should be aware that the quality of the coolant does not in any way depend on this parameter. As a rule, the pigment is added, which is more profitable for the manufacturer in price.
Step 5
An important parameter for choosing antifreeze is its shelf life. The A40M brand is the most "durable": the service life of this fluid is at least 3 years. This antifreeze is considered the best. The service life of products from different manufacturers is different and is usually indicated on the packaging.
Step 6
When choosing antifreeze, you need to pay attention to its main characteristics: low freezing point, high ignition temperature. It is important that the liquid is as viscous as possible, otherwise its circulation in the cooling system will be impeded and, as a result, heat transfer will be reduced. Attention should also be paid to the foaming ability of antifreeze: a high one reduces the characteristics of heat transfer.
Step 7
It is important that the coolant has a low aggressiveness to metals, is inert to rubber and plastic, and has low toxicity. Therefore, you should study well the composition of antifreeze, which manufacturers indicate on the label of their product.
Step 8
You should know that there are fakes of this liquid. As a rule, the plainer the packaging and the cheaper the price, the more likely it is to buy a fake. The absence of the manufacturer's address and telephone number on the label further increases this risk.
