A car owner who appreciates the neat appearance of his vehicle is faced with the problem of black plaque on the wheels and, more unpleasantly, on the bottom of the body, which is the result of the brake system, where the friction of the pads against the discs creates fine dust, which contains metal particles, which, under the influence of moisture and high temperature, literally soak into the paint coating.
If you don't pay attention to this, it becomes difficult to remove over time, and in the worst cases it can become a hotbed of corrosion. Conventional shampoo is often powerless against entrenched metal shavings, so you need to understand the chemical nature of the contamination. Bodies dust It is an aggressive environment that requires a specific cleaning approach.
In this article, we will discuss what professional and folk remedies will help to return the body to its original shine without damaging the varnish. You will learn how to properly conduct the procedure so as not to harm the car, and what preventive measures should be taken. Proper care prolongs the life of the body and preserves its commodity value.
Nature of pollution and risks to LCPs
Brake dust is made up of microscopic particles of friction material from the pads and metal from the discs. During braking, the temperature in the knot reaches hundreds of degrees, making the particles hot. When they settle on the body, especially on arches and sills, an oxidation process occurs, which is accelerated when moisture enters. Iron in the composition of the dust begins to rust, forming characteristic red points.
The danger of this plaque is not just aesthetics, metallic dust has abrasive properties, and when you try to wipe it off with a dry or wet cloth without chemical treatment, you actually work with fine sandpaper on varnish, and this leads to micro scratches, known as "web spiders," that make the body matte.
In addition, brake dust often contains compounds of copper and other metals that can react with the components of the varnish. Prolonged exposure to such plaque on the surface, especially in hot climates, can cause local change in color of the coating or its clouding. dusting It should be a regular procedure in the arsenal of the motorist.
It's important to understand that just washing away the dust with water is not going to work, because the particles are so small and sticky that mechanical action without chemical softening is not very effective, and that's why the autochemistry industry offers specialized cleaners that work at the chemical level.
Professional Autochemistry: Brake Dust Cleaners
The modern market offers a wide range of specialized products, the main active ingredient of which are acids or alkalis that can dissolve metal oxides, such products are often called "disc cleaners", but they are ideal for the body, the principle of which is a chemical reaction that turns solid metal particles into water-soluble compounds.
When you apply a good cleaner, you can often see that the clear or white liquid in your eyes turns into dark purple or burgundy, which is a visual indicator of the reaction with iron. Acid cleaners They act faster and more aggressively, removing even the old plaque, while alkaline is softer and safer for rubber elements.
Popular brands such as Koch Chemie, Liqui Moly or GrassAcids (pH < 7) are excellent at dealing with ingrained contaminants, but require caution. Alkaline (pH > 7) are better for regular care and less dangerous to chromium and aluminum if not allowed to dry.
⚠️ Warning: When working with acid cleaners, be sure to use gloves and safety glasses. Acid vapors can be harmful to the airways, and getting concentrate on the skin causes a chemical burn.
Exposure time is an important aspect. You can't let professional chemistry dry on the surface. If the product dries, the concentration of active substances will increase, and it can damage the varnish or leave hard-to-wash out divorces. Always follow the instructions on the package regarding the time of exposure.
Folk Methods and Affordable Alternatives
Well, you don't always have professional chemistry at hand, and in these cases, you get the time-tested folk remedies, but it's worth noting that they work worse than specialized compounds and require more physical effort, but they are quite effective for mild contaminants.
One of the most popular methods is to use citric acid or table cider vinegar, an acidic medium that helps break down metal oxides, a solution that is prepared in a ratio of about 100 grams of acid per liter of water, applied with a spray spray, given a few minutes to work, and thoroughly flushed. Acetic acid It is also effective, but has a specific smell that is long weathered.
Another option is to use orthophosphoric acid rust converters, which are often sold in construction stores and are cheaper than autochemistry, but you have to be very careful with them: they can leave white coating if not washed properly, and are aggressive to some types of plastic.
Soda and other alkaline solutions are less effective against metal dust because they are better at fighting organics and fats, but when combined with mechanical action (a soft sponge) they can help remove fresh, uninfused plaque, the main thing is not to rub dry dirt so as not to scratch the body.
Can WD-40 be used for cleaning?
WD-40 has great penetrating and dissolving properties, can soften fresh brake dust and make it easier to wash it off with water, but it's not a specialized tool, and for large volumes of old dust, its effectiveness will be low, and WD-40 leaves a greasy film that you have to degrease.
Comparative table of cleaning equipment
To make it easier for you to choose the right solution, we have prepared a comparative analysis of the different types of products, it is important to consider not only the price, but also the safety for the materials of your car.
| Type of instrument | Efficiency | Safety for LCPs | Cost |
|---|---|---|---|
| acid cleaner | High. | Medium (requires flushing) | High. |
| Alkaline cleaner | Medium | High. | Medium |
| Citric acid | Low/Medium | High. | Low. |
| Rust converter | High. | Low (risk of plaque) | Low. |
As you can see from the table, professional acid products are more effective, but they require precision. People's methods are cheap, but they are time-consuming. The choice depends on the level of pollution and your budget. You should choose mild alkaline autochemistry for regular care.
There is no need to save on quality, if we are talking about expensive body components. Cheap acids of unknown origin can contain aggressive impurities that will damage rubber seals or plastic linings on the arches. A quality cleaner It always has a balanced composition.
Technology of proper cleaning of the body
The process of removing the pad dust requires consistency. Just splashing and flushing is a mistake that can cause the dirt to be smeared all over the body, and the right technology guarantees a scratch-free result.
First, you need to wash your car thoroughly with a conventional shampoo to remove surface dirt, sand and dust. If you don't, you'll rub abrasive particles on the varnish during the main cleaning, and pay special attention to the arches and the bottom of the doors.
After washing, apply the brake dust repellent of your choice. It is important to apply it to a cold surface in the shade. The chemistry will dry out too quickly in the sun. Give the tool to work the time specified in the instructions (usually 2-5 minutes), but do not allow drying.
☑️ Checklist for safe cleaning
It should be washed with a powerful pressure of water, preferably from a high pressure apparatus (Kercher), the jet should knock down the softened chemistry along with the dissolved dust, then the body should be dried with a soft microfiber. If the plaque remains, the procedure can be repeated, but not more than twice in a row.
⚠️ Warning: Never use metal brushes, scrapers or hard sponges to remove brake dust from the paint coating. This is guaranteed to leave deep scratches that will be visible in any lighting.
Protection of the body from repeated contamination
After a successful cleaning, the question arises: how do we make sure that the dust doesn't stick so fast? Modern industry offers a range of solutions to create a protective barrier between the varnish and the outside world, which will not only facilitate future washing, but also preserve the appearance of the car.
One of the most affordable methods is to use Teflon or wax polishes, which create a slippery film that can wash dirt away more easily, but the lifespan of these coatings is short, from one to several sinks, and for more serious protection, it's worth considering ceramic compounds.
Ceramic coating It creates a hard, chemically resistant layer that virtually keeps dust particles out of the pores of the pores, and even if it forms, it doesn't eat away and is easily removed by water, and it's an expensive but effective investment in body safety.
For maximum protection of arches and rapids, consider installing plastic slats (lockers) or applying a liquid slat (Liqui Moly, Hi-Gear) to create an elastic rubber-like film that takes stone strikes and dust sticking on itself, protecting the metal of the body.
There are also antistatic sprays that reduce surface electrification. Because dust often flies to the body due to static electricity, this method can be useful in combination with other measures. Regular treatment of wheel arches with anti-gravel compounds also reduces the amount of flying dust.
Frequent errors in the removal of plaque
Many motorists, trying to save time or money, make typical mistakes that end up costing more, and knowing these traps will help you avoid problems with the LCP.
The first and most common mistake is to try to wipe dry dust with a cloth. As mentioned, it works like sandpaper. The second mistake is to use household chemicals (bath cleaning products or toilet cleaners), which can contain chlorine or too aggressive acids that will irrevocably spoil the varnish and plastic.
The third mistake is ignoring the instructions. Some people think that if you overdo it, it's going to be cleaner. In fact, aggressive chemistry will start to corrode the varnish itself or the chromium on the discs. And the fourth mistake is neglecting hand protection. Chemistry is chemistry, and it's necessary to take the skin.
⚠️ Warning: Avoid putting brake dust purifiers on rubber seals for long periods of time. Acids and solvents can cause drying, cracking and loss of rubber elasticity.
The secret to a clean body is not the friction force, but the right chemistry. Give the means to do the job, and the mechanical impact will be minimal.
Remember, regular maintenance takes less time than dealing with old-fashioned pollution. If you wash off brake dust at least once a month, you won't need aggressive cleaning techniques. The body will look new for years to come.
FAQ: Frequently asked questions
Can you wash the dust with ordinary water under pressure?
You can wash off fresh, surface dust with ordinary water, if the plaque is already boiling or oxidized, the water won't take it, and if you put a strong pressure on it without first softening with chemistry, you can drive abrasive particles deeper into the microcracks of the varnish, you need a chemical reaction to dissolve the metal.
Is brake dust harmful to human health?
Yes, brake dust can contain asbestos (in old pads), copper, antimony and other heavy metals, and inhaling this dust or hitting it on the skin is not useful, so when cleaning wheel arches and discs, especially if you use brushes, it is recommended to wear a respirator and gloves, and not to stand on the leeward side.
How often should the body be treated with a dust remedy?
Frequency depends on driving style and operating conditions. When driving in the city with frequent braking, it is recommended to process once every 2-4 weeks. If the car costs or is used poorly, it is enough to process the arches and bottom of the body once a season before winter or summer storage.
Is a brake dust cleaner dangerous for rubber mats?
Most modern cleaners are safe for rubber in short-term contact and subsequent washing. However, aggressive acidic compounds can change the color or texture of rubber, it is better to avoid direct contact of concentrated products on the mats and rinse with plenty of water.