» »

Which sealant is better for the cooling system

17.04.2021

The cooling system plays an important role in the work of the car. First, it provides the normal operation of the engine, and secondly, it makes it possible to dump the salon with minimal energy costs.

Therefore, when the cooling system is formed in the cooling system, the entire car suffers. The engine begins to work worse and constantly overheats. At the same time, the oven stops the heating air to the salon. Fortunately, this problem can be easily getting rid of minimal cost. But for this you will need high-quality sealant.

The sealant is an excellent alternative to stationary repair methods. It allows you to quickly and without any difficulties to close the slope of a small size. If the damage is too large, the best option will be the full replacement of the part.

Quite often, in the course of operation, small pebbles fall into the cells of the radiator, applying it significant harm. In most cases, a soldering or argon welding is used to restore. But that such repairs have become possible special equipment and some skills. In order to take advantage of the sealant do not need anything except the very substance.

Attention! Sealant is not suitable for correcting serious damage.

There are no rare cases when flowing is formed in the tubes of the cooling system. In this case, the sealant perfectly cope with this problem and return the engine to the former power. Provided, of course, there is no other damage.

Microcracks in the tubes appear as a result of thermal processes that pass within the cooling system. This is because the channels circulates the cooling fluid with a temperature of 80-90 degrees.

This is not only possible to look at the video:

What are the sealants for the radiator

The automotive industry is dynamically developing over the past 100 years. During this time, many auto chemicals were invented, which help extend the service life, and even improve some engine characteristics, returning it to the former performance.

You will be surprised, but a huge number of sealants at its base have natural substances, it can be:

  • Mustard;
  • mineral fertilizers;
  • ginger root powder.

All additives are written on the packaging. Before buying, be sure to become familiar with them, because the composition of the sealant for the cooling system is largely dependent.

An important disadvantage, funds based on the substances listed above are scores that can be formed within the cooling system. These sediments in the tubes do not give antifreeze to circulate normally through the tubes. Nevertheless, the price of such sealants is located on the level available for each motorist.

Attention! Typically, such sealants have a brown or greenish tint. Inside the liquid float large flakes.

Now on the market you can find high-quality sealants from manufacturers such as:

  • Gunk;
  • LAVR STOP LEAK;
  • 3Ton;
  • Hi-Gear.

Sealants for cooling systems of these brands have an acceptable price and at the same time reliably stop flowing, allowing the engine to work normally and the stove. In addition, the new technology of creating substances for sealing the blades allows you to avoid blockages.

In order for breakdowns, it is best to use sealants created on the basis of metal polymer particles. They are attached to the edges of microcracks and effectively stop it, restoring the design.

Same Polymers when entering antifreeze become a suspension. It does not set out and does not score the channels, preventing circulation. As a result, when replacing the cooling fluid, the sealant of this type is completely output from the system, without applying it no harm.

Attention! Sealants based on polymer particles can cope with samples whose diameters are not more than one millimeter.

We test sealants

Lavr Stop Leak and Organizer

As two test samples, we take LAVR STOP LEAK with metallized polymer particles and a means based on natural substances. To understand that we better handle damaged engine cooling systems and learn the result.

Let's start with the test LAVR STOP LEAK. An interesting feature of the means is that manufacturers to the main composition add special fiber. It allows you to better connect the edges of the crack, thus restoring the tightness. The tool can cope with samples, the diameter of which varies from 0.1 to 2 mm.

Attention! The time that the sealant grabbing is from 3 to 5 minutes.

This sealant for the cooling system has resistance to high temperatures. He can keep your structure even at + 80 degrees Celsius. In addition, the substance does not score the tube and does not remain inside the design after the drain.

Attention! The lower temperature limit of LAVR STOP LEAK is -30 degrees.

This sealant can be used even on the street in a strong frost. This opportunity will be worth it. After all, it will stop in the middle of the field in - 20 is not the best pleasure.

After the tests arrived in the laboratory approximated to real conditions, such intervals were installed. Throaching sealant for the cooling system:

  • for holes with a diameter of up to 0.1 mm - a few seconds;
  • for samples with a diameter of about 1 mm - about four minutes;
  • for regions with damage to 2 mm - 10 minutes.

Indicators are quite good. The quality of the protective layer also does not cause complaints. The same procedure was done with a sealant, which was organic additives. With a county, he coped for 3-5 minutes. But with the analysis of the test structure, the remnants of sealant were discovered inside. If a similar thing happened in reality, the risk of a blockage would be extremely large.

Comparison of other popular sealants

For the completeness of the data collected, we took another number of multiple sealants popular among motorists and tested them on our experimental cooling system. The results were very interesting.

Good results for sealing disintegration of different diameters showed BBF and LiQui Moly sealants. In turn, the medium called Gunk took more than two minutes to tighten a small hole.


K-seal showed himself well only when chosening small slots in the cooling system. To seal the bare bag with a large diameter, he needed more than six minutes.

Good indicators in climbing shoes in the cooling system showed Hi-Gear sealant. For complete sealing, he needed only two minutes. That's just success was short. After a few minutes, the holes with a diameter of 0.7 and 1 mm opened. Fully leaks were eliminated only after 10 minutes. At the same time, antifreeze attached twice.

Overview and comparison of the metal ceramics sealant of the company HI Gear and the sealant of the company STEPUP:

Fillinn sealant could not cope with a millimeter hole in the cooling system. Nevertheless, the diameter of which did not exceed 0.5 mm, it took about 10 minutes.

To obtain more accurate data of the cooling system after restoration worked without a break for 10 hours. During this time, no leaks were noticed. The engine itself worked stable as the stove.

After the test design was cleaned inside the sediment layer was detected. This, in principle, should be expected. But since there were few foreign particles, then our experts concluded that it would not greatly affect the cooling system efficiency.

Sealants can be extremely effective. But most of them leave deposits in the cooling system. Fortunately, if you use high-quality funds, this will not affect the work of the part.

The use of sealant and subsequent cleaning of the radiator: