Liquid key

Liquid key allows you to unscrew nuts, bolts or other rusted threaded connections. usually, they are available as liquids or aerosols. The choice of a particular product is based on its composition, ease of use, effectiveness, price, packaging volume, and so on. It is advisable to have a liquid key for a car for all vehicle owners, since situations where a screwed connection cannot be unscrewed can happen unexpectedly. In addition, the mentioned tool can be used in everyday life, for example, when repairing household or various auxiliary equipment.

How does liquid key work?

Regardless of the aggregate form (liquid or aerosol) in which the said agent is implemented, its basic task is to dissolve the rust formed in the thread, thereby giving the opportunity to unscrew it. Accordingly, when a liquid car key is applied to the surface of a part near the thread, the liquid flows inside, and under the influence of the chemical compounds contained in the composition, iron oxides and other metals are destroyed, as well as banal dried debris and dirt.

However, when choosing the best liquid key, you need to pay attention to additional reasons. namely, the tool must have as much penetrating power as possible... It depends on how deep the reagent gets into the metal compound and what area of ​​contact it will process. The second factor is composition efficiency. It directly depends on the chemical compounds used in it. The third is a protective function. It is desirable that a protective film remains on the surface after treatment with the agent. It is needed to provide lubricating properties, as well as the further formation of corrosion. By the way, such means can pre-treat threaded connections so that in the future there would be no problems with their unscrewing. Often, a liquid key with molybdenum disulfide is used for these purposes.

liquid key rating

On the Internet, you can find a large number of different drugs designed to help loosen rusted nuts. However, not all of them are equally effective, and in addition, they differ in ease of use and price. This section contains information that will allow you to choose the best liquid key, based not only on its description, but also on real tests and comparisons with analogues. In addition, the choice of one or another means often depends on logistics, since different compositions can be sold on the shelves in different regions of the country. The tests were carried out on rusted bolts with a nut with a diameter of 12 mm. The moment of unscrewing was monitored after 3 minutes of exposure to the applied agent using a torque wrench. The initial force was taken to be about 11 kgf m.

Name of funds	Torque, kgf•m	Aggregate state and description	Package volume, ml	Price as of the end of 2021, rub
Caramba rasant	8,76	Spray can. Professional rust dissolver.	100; 250	150; 200
Liqui Moly Multi-Spray Plus 7	8,54	Spray can. Multipurpose grease for displacing moisture, protecting against corrosion, dissolving rust.	300	500
Agat-Auto "Master-Klyuch"	8,76	Spray can. Penetrating lubricant. Protects against corrosion and dissolves rust.	350	170
Liquid Moly LM-40	8,96	Spray can. Penetrating universal remedy.	200; 400	290; 550
Liqui Moly MOS2 Rostloser	9,08	Spray can. Rust converter with molybdenum sulfate.	300	450
WD-40	no data	Spray can. Universal lubricant.	100; 200; 300; 400	170; 210; 320; 400
Felix	no data	Spray can. Multipurpose penetrating lubricant.	210; 400	150; 300
Lavr ("Laurel")	6,17	Spray. Penetrating grease (trigger option available).	210; 330; 400; 500	270 (for 330 ml)
Cyclo Break-Away Penetrating	no data	Spray can. Liquid key.	443	540
Kerry KR-940	10,68	Spray can. Liquid key with molybdenum disulfide. Tool for unscrewing rusted parts	335	130

the following is a detailed description of all the listed tools with their advantages, disadvantages and some features. We hope that based on the information provided, it will be easier for you to make a choice.

If you had experience using a penetrating lubricant, a liquid wrench, then please express in the comments under this material. Thus, you will help other car owners.

Caramba rasant

It is positioned as a professional tool for use in cases where threaded pairs are strongly stuck to each other. Therefore, it can be used not only in private garages, but also at professional service stations. Real tests of the product showed that it really has the declared characteristics. Among the shortcomings, it is worth noting the small size of the spout, which is why it is sometimes difficult to get to remote parts. also a liquid key is a bit expensive.

It is sold in two types of packages - 100 ml and 250 ml. Their price is respectively 150 and 200 rubles.

1

Liqui Moly Multi-Spray Plus 7

This tool is a universal "7 in 1" type. So, it is positioned as a composition for protecting against moisture, protecting the electrical system of a car, dissolving rust, protecting surfaces from corrosion, and also as a lubricant. Multi-Spray Plus 7 can be used in professional workshops as a liquid wrench or universal tool. The only drawback is the high cost.

Sold in a 300 ml bottle. Its article number is 3304. The price of such a liquid key is 500 rubles.

2

Agat-Auto "Master-Klyuch"

This is a domestic penetrating lubricant produced by the Agat-Avto LLC enterprise. According to the manufacturers and the results of tests, it can be argued that the tool facilitates the unscrewing of threaded connections, lubricates surfaces, eliminates squeaking, removes moisture, protects and cleans plastic and rubber surfaces, prevents corrosion, and dissolves technical contaminants.

The disadvantages of the tool include the fact that the spray tube is attached to the cylinder with an elastic band, so it is easy to lose it. The second drawback is the unpleasant odor that the drug has.

It is sold in a 350 ml bottle, the price of which is 170 rubles.

3

Liquid Moly LM-40

It is a penetrating agent commonly used in various parts of the car. Designed to displace moisture, protect the electrical system of the car, dissolve rust and prevent its further appearance, as well as lubricate. The manufacturer positions this tool rather as a universal one.

A positive feature of the cylinder is the reliable fastening of the spout with a bracket. The fragrance is added to the composition of the product, so it is pleasant to work with it. As practice shows, Liqui Moly LM-40 can be used not only in car components, but also for domestic purposes (for example, when repairing or dismantling any equipment).

It is sold in two types of cylinders - 200 ml and 400 ml. Their articles are 8048 and 3391, and the prices are 290 and 550 rubles, respectively.

4

Liqui Moly MOS2 Rostloser

This agent is a rust converter containing molybdenum sulfide. Therefore, it is extremely effective against rust. In addition, the product prevents creaking, protects surfaces from corrosion and oxidation. The composition is not aggressive to rubber, plastic and paint. Therefore, it can be used next to the corresponding parts. Some masters use Liqui Moly MOS2 Rostloser (article 1986) as a prophylactic. namely, they treat threaded connections with it before tightening them.

A feature of the balloon is the absence of a spout. In some cases, this makes it difficult to accurately and deeply apply the product. But despite this, the drug can be used not only at home, but also at professional service stations. Of the shortcomings, perhaps only low lubricating properties can be noted.

The liquid key is sold in a 300 ml bottle, the price of which is 450 rubles.

5

WD-40

It is one of the oldest and most famous universal lubricants. It is used in many car systems and in everyday life. Including as a liquid key. The grease eliminates creaking, displaces moisture, cleans resins, glue, grease, reliably protects metal surfaces from corrosion.

The advantage of the tool can be called its versatility. For example, it can be used as a lock defroster or defogger. Of the disadvantages of the packaging, only the fact that the tube on the spout is attached to the wall of the cylinder with adhesive tape or rubber bands can be noted. Therefore, there is a great risk of losing it over time.

The product is sold in cans of four different volumes - 100 ml, 200 ml, 300 ml and 400 ml. Their articles are 24142, 24153, 24154, 24155. Prices - 170, 210, 320, 400 rubles.

6

Felix

Felix is ​​a universal multifunctional penetrating lubricant of domestic production. With its help, it is possible to process rusted, jammed and frozen elements of various mechanisms. After application, a reliable protective film is formed on the treated surface, which prevents further corrosion and deposits. Included is a tube-nozzle.

The disadvantages of a liquid key include mediocre efficiency and an unpleasant odor that occurs when using it. The advantages are a relatively low price with a significant volume of the cylinder. Therefore, the tool may well be used for private purposes.

Available in bottles of two volumes - 210 ml and 400 ml. Their prices are respectively 150 and 300 rubles.

7

Lavr ("Laurel")

Under this trademark, a liquid key is produced in four packages. Three of them are aerosols (210, 400 and 500 ml bottles) and a hand sprayer (330 ml). The manual sprayer has two modes of operation - spraying the product with a thin jet and a wide torch. The latter option, according to manufacturers, allows you to save money and use it more efficiently.

As for his penetrating abilities, they are at an average level. Despite this, the liquid key "Laurel" may well be used in the garage and even at home as a relatively inexpensive and moderately effective tool.

The price of the mentioned cylinder with a sprayer with a volume of 330 ml is 270 rubles. Its article number is Ln1406.

8

Cyclo Break-Away Penetrating

The composition is also intended for lubrication of soured threaded connections. It can be used to lubricate machine locks, their cylinders, door hinges, telescopic antennas and so on. However, together with machine technology, it can also be used in everyday life. It contains no silicone. Produced in the USA.

Of the advantages, it is worth noting the large volume of the bottle - 443 ml, and the quality of the packaging. Of the shortcomings - the average performance. The tool is more suitable for use in private garages than in professional auto repair shops.

The price of the mentioned cylinder with a volume of 443 ml is 540 rubles.

9

Kerry KR-940

This is a domestic tool for unscrewing rusted parts. In addition, a liquid key can be used to lubricate creaking hinges, springs, sticking locks, to displace moisture from electrical contacts. Unfortunately, the performance of objective tests showed that the effectiveness of the Kerry KR-940 leaves much to be desired, so it is also placed in the last place in the ranking.

In addition to low efficiency, it also has a couple of disadvantages. The first is the presence of an unpleasant odor. The second is that the tube for the spout is attached to the wall of the balloon with an elastic band, so there is a high probability of losing it over time. Accordingly, the decision to purchase this tool lies entirely with car owners and the purpose of use.

this liquid key is sold in a 335 ml can, its price is 130 rubles, and the article is KR9403.

10

Additional resources

In addition to the TOP-10 liquid keys listed above, you can now find many other similar products on store shelves. Let's list some of them:

• Pingo Bolzen-Great... It has average performance characteristics. Advantages - large volume (400 ml) and secure attachment of the spout. The disadvantage is the high cost, about 560 rubles.
• STP Multi-Purpose Lubricant Spray. Multi-purpose lubricant. Fights rust, displaces moisture, can be used to lubricate hinges and locks. However, it has average performance. The tube is attached to the spout with adhesive tape, which is inconvenient and unreliable. It is sold in a 200 ml bottle, the cost of which is 300 rubles.
• Drop PE-60 Universal Spray. also one multi-purpose grease. Displaces moisture, including from electrical circuits, and protects surfaces from corrosion. A feature of the cylinder is the presence of two spouts of different lengths, which facilitates operation. Possesses low efficiency of fight against a rust. Sold for 640 rubles in a 400 ml bottle, article number - 7698.
• damn express. This is a classic rust converter. However, its average performance suggests that it is not suitable for professional use, but it is quite suitable for a private garage. The disadvantage of the packaging is the lack of a spout, without which it is impossible to reach the removed parts. The volume of the balloon is 250 ml, and its price is 250 rubles.
• Runway. It is positioned as a penetrating lubricant for the treatment of soured metal surfaces, including threaded joints. The tool displaces moisture from the surface, including electrical wiring. Tests show mediocre effectiveness of the remedy. The only advantage is a large 400 ml bottle. Its price is 320 rubles. Article - RW6086.
• Horse. Classic liquid key. According to the manufacturer, the product neutralizes corrosion, and also lubricates rubbing work surfaces. Tests show mediocre capabilities of the composition. Its only advantage is its low price. The product is sold in two packages - 210 ml and 400 ml. The price of the first is 130 rubles. Its article number is SDSX0PCGK01. The price of a larger balloon is 200 rubles.

If for some reason you are not satisfied with the price or quality of a particular liquid key, then such compositions can be made independently.

DIY liquid key

The composition of the liquid key is simple, so there are several simple, "folk" methods that allow you to make the mentioned tool yourself. Moreover, this does not require expensive components, and the preparation procedure is not difficult and is within the power of almost every car owner. So you will significantly save money on the purchase, while creating a liquid key, almost the same as the factory one.

There are several "folk" recipes. Let's focus on the simplest and most popular. For cooking you will need:

• kerosene;
• transmission oil;
• solvent 646;
• plastic spray bottle (with oil-resistant rubber).

The listed liquids must be mixed in a clean container in the following proportions: kerosene - 75%, gear oil - 20%, solvent - 5%. As for gear oil, in this case its brand does not really matter. The main thing is that in order for it to be not old and clean, it did not contain dirt and / or clots. Instead of solvent 646, you can use any other available to you (for example, white spirit).

However, this recipe is not the only one. For more information on how to produce a liquid key, you will find in another material.

How to make a liquid key

The composition of penetrating lubricant is quite simple: kerosene, oil and solvent. Therefore, it is better not to buy a liquid key, but to make it yourself. There are 9 working recipes that make it easy to prepare an analogue with the properties of VD-40 Read more

 

instead of an epilogue

We recommend that you always have a liquid key tool at your disposal. If not in the car, then definitely in the garage or at home. It will help you in the most unforeseen situations, concerning not only problems with the car, but also in everyday life. As for the choice, at present the range of these funds is quite large, and allows you to purchase an effective liquid key at an affordable price. Do not forget that purchases must be made in trusted stores in order to minimize the likelihood of buying a fake. Try not to buy a liquid key in car markets from dubious sellers. also an effective and inexpensive option would be to make the product yourself. This will allow you to save a lot, especially if you have the components listed above in your garage.