How to check antifreeze and antifreeze. Simple ways to check the quality of coolant

How to check antifreeze and antifreeze. Simple ways to check the quality of coolant
Selecting and buying antifreeze for the cooling system, every motorist wants she really had declared on the label properties.

2015-11-17 14:05:37 104

antifreezecooling systemlet antifreezeantifreeze antifreezelitmus papertest liquid

Selecting and buying antifreeze for the cooling system, every motorist wants she really had declared on the label properties. According to recent studies, the share of counterfeit goods on the market anti-freeze liquid is from 40 to 50%. Despite a nice plastic package and carefully made stickers on it, inside the can is liquid only vaguely resembling domestic or foreign antifreeze antifreeze. Where is the guarantee that the inside of the canister is tinted water, flavored electrolyte battery or the like with added sugar or salt?

how dangerous is fake

What happens to coolant (or antifreeze) poured into the cooling system when the temperature drops to a value (e.g., -400 C) , indicated on the package? It is crystallization and antifreeze loses its fluidity, turning into a kind of jelly. However, he does not increase in volume, therefore no pressure on the inner walls of the radiator and to the jacket of the cooling system. The situation is quite different if instead of antifreeze in the cooling system is fake, made of ordinary water. Reaching zero temperatures, the water freezes, significantly increasing in volume, and since the cooling system is sealed conventionally formed ice simply crushes and breaks the channels of radiator, water pump and engine block. Even if the fake composition of antifreeze still present some part of ethylene glycol and he with decreasing temperature does not freeze, and crystallize, it is unlikely the forgers bother adding to it the special anti-corrosion additives, antifreeze enveloping protective film. Therefore, aggressive fluid, which is a mixture of water and alcohol, will immediately begin to corrode parts of the cooling system of the engine. It is unlikely that the engine will survive at least one season of operation in such conditions. To check the presence of protective additives in the home is almost impossible, but to know, will the antifreeze to the cold weather, the power of each.

Litmus paper

Moistened litmus test coolant, the quality of which you want to define, and then comparing the acquired color it with special color scale, is not difficult with sufficient accuracy to determine its pH. If such scales are not visible, the approximate acid-base balance of antifreeze can be determined by eye. The coloration of the litmus paper in pink color will indicate that in the tested liquid excess acid (pH is in the range from 1 to 5), and this is direct evidence of adulteration. Blue litmus paper will witness a strong alkaline environment with a pH > 10, and therefore, such an antifreeze or antifreeze, too, is a forgery, despite the disgusting quality. If the litmus paper turned green, you know – before you antifreeze decent quality with acid-alkaline balance the pH in the range of 7 to 9.


In addition to measuring the density of the electrolyte, modern aerometric possible to determine the freezing point of antifreeze. These hydrometers next to the densitometer scale is a scale that is graduated in degrees. Typing with the help of rubber bulb of the hydrometer antifreeze or antifreeze, you must determine the line of contact of the test liquid with the hydrometer stem. Finding the line near the scale of the green color would indicate a temperature of crystallization of the antifreeze in the range from -30 to -400 C. If the indicator will show a red bar, it means the coolant has partially lost its properties and will begin to crystallize at a temperature of from -20 to -300 C. the Yellow scale meets the temperature range from -10 to -200 C. If the test liquid in the hydrometer touches the stem of the hydrometer in the blue area of the scale, this antifreeze must be replaced immediately because it was completely unusable and will behave like normal water.

sample freeze

Typing in a small plastic bottle with 100-150 ml of test fluid, before tightening the tube a little squeeze bottle, releasing the air out of it – maybe antifreeze would be fake and after freezing will crush plastic containers. Placing the bottle with the liquid in the freezer and after waiting 1-2 hours, remove the prototype and to study it. The temperature in the freezer reaches about 350 degrees below zero C, so if the analyzed fluid is not frozen and not subjected to crystallization at that temperature, it is guaranteed to be able to survive more severe frosts, providing a reliable and stable engine operation in winter. Let antifreeze in the engine of your car never freezes! Good luck to you!

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