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How WD-40 Can Help with Automotive Maintenance and Prevent Wear on Your Car

Written by Bruno Teles
Published on 16/07/2025 at 18:58
18 Segredos do WD-40 que Vão Salvar seu Carro e seu Bolso
18 Segredos do WD-40 que Vão Salvar seu Carro e seu Bolso
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Discover How WD-40 Can Be Your Best Ally in Automotive Maintenance, Solving Everything from Simple Cleaning Problems to Preventing Repairs That Could Be Costly at the Shop.

Most people know WD-40 as a simple spray for lubricating hinges or loosening rusty screws. What few know is that this blue and yellow can hides an incredible potential for automotive maintenance, able to solve a range of problems that often send your car straight to the shop.

In this guide, we will reveal 18 surprising and effective uses of WD-40 that will help you keep your car spotless, saving time and, most importantly, money. Get ready to discover tricks that even some mechanics prefer not to tell you.

18. Keep Hard-to-Clean Areas Always Clean

The interior of the car, especially the rubber mats, easily accumulates dust, mud, and tar. To create a protective layer, spray a little WD-40 on clean mats and wipe with a dry cloth. Dirt will have a harder time sticking. The same goes for gum stuck in upholstery: apply the product, wait a minute, and scrape gently.

17. Remove Bird Droppings and Tree Sap

Bird droppings are acidic and can stain paint. If already dry, do not scrub hard. Spray WD-40 on the dirt, wait a few minutes, and clean with a microfiber cloth. The trick also works for removing old stickers and sticky tree sap without scratching the body.

16. Prevent the Gas Cap from Freezing

In very cold regions, moisture can freeze the rubber seal of the fuel cap. To prevent this, apply a light coat of WD-40 to the rubber before the intense cold. This repels water and prevents freezing.

15. Prevent Rust and Corrosion

Metal and chrome parts are always exposed to moisture. A thin layer of WD-40 creates a protective film that prevents oxidation and rust, keeping the shine of trim and wheels for much longer.

14. Stop Irritating Creaks

Doors, locks, and the hood latch squeaking? It’s usually a lack of lubrication. A quick spray of WD-40 solves the problem, penetrating the mechanisms and eliminating the noise. Attention: never, ever apply WD-40 on brakes. If they are making noise, see a mechanic.

13. Remove Moisture from the Ignition System

The name WD-40 stands for Water Displacement, 40th formula. If the car misfires on rainy days, it may be moisture in the electrical system. With the engine off, spray a little of the product on the distributor cap and spark plug wires to expel moisture and prevent starting failures.

12. Protect the Battery Terminals

Corrosion on battery terminals (that greenish residue) hinders the flow of electricity. To clean, apply WD-40, wait a few minutes, and scrub with a steel brush. This ensures efficient electrical connection and extends the battery’s lifespan. Remember that the product is flammable, so do this in a well-ventilated area and away from sparks.

11. Temporarily Restore Headlight Clarity

Yellowed and dull headlights reduce visibility. For a quick solution, clean the headlights thoroughly and then apply WD-40 with a soft cloth, polishing the surface. This removes surface oxidation and improves shine, but remember it’s a temporary effect.

10. Clean and Restore Car License Plates

To make your car’s license plate look new, remove it, clean it with soap and water, and after it dries, spray a thin layer of WD-40. This removes tough stains and creates a protective barrier against rust.

9. Shine and Protect Tire Sidewalls

Want that long-lasting “black” effect? After washing the tires, apply a light coat of WD-40 on the sidewalls (never on the tread!) and spread it with a cloth. In addition to adding shine, it protects the rubber from drying out and cracking.

8. Loosen Rusty Screws

Stuck wheel bolt? Generously spray WD-40, wait at least 10 minutes, and try again. The product penetrates rust and loosens the parts much more easily.

7. Prevent Mud from Sticking to Wheels

If you’re going to take a dirt road, apply a layer of WD-40 on clean wheels. It creates a smooth surface that makes it harder for mud to adhere, making subsequent cleaning much easier.

6. Stop the Squeaking of Wiper Blades

Dried-out blades make an irritating noise on the windshield. To fix this, dampen a cloth with WD-40 and gently wipe over the rubber of the blades. This cleans and conditions the material, ensuring a smooth and quiet glide.

5. Lubricate Power Window Tracks

Slow or sticking power window? The cause is usually dirt in the tracks. With the window down, apply a small amount of WD-40 in the side channels and clean off the excess with a cloth. Raise and lower the window a few times to distribute the product.

4. Remove Stickers Without Damaging Paint

To remove old stickers without leaving glue residue, spray WD-40 on it, wait a few minutes, and pull carefully. The glue softens, and the sticker comes off completely without harming the paint.

3. Clean Insects Stuck on the Front Grille

After a trip, the front of the car gets covered in insects. To remove them effortlessly, apply WD-40 in the area, let it sit for 5 minutes, and then clean with a soft cloth. The residues will come off easily.

2. Eliminate Adhesive Residue

That leftover tape glue that seems impossible to remove comes off easily. Spray WD-40 on the residue, wait a minute, and wipe with a clean cloth. The glue dissolves without damaging the surface.

1. Clean and Protect Seals

The seals on doors and windows dry out over time, causing leaks and noise. To keep them flexible and maintained, apply a light coat of WD-40 with a cloth. This prevents cracking and ensures a perfect seal.

And you, do you know any other genius uses for WD-40 in the car? Share your tip in the comments!

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Alexandre Ramos
Alexandre Ramos
17/07/2025 17:55

Remove manchas em tecidos e esmaltes sintéticos.

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Bruno Teles

Falo sobre tecnologia, inovação, petróleo e gás. Atualizo diariamente sobre oportunidades no mercado brasileiro. Com mais de 7.000 artigos publicados nos sites CPG, Naval Porto Estaleiro, Mineração Brasil e Obras Construção Civil. Sugestão de pauta? Manda no brunotelesredator@gmail.com

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