What is WD-40 actually good for?

Whilst the most common use for WD-40 Multi-Use is protecting metal from rust and corrosion, penetrating stuck parts, displacing moisture, and lubricating almost anything, WD-40 Multi-Use really does have multiple uses! We have rounded up some of the best WD-40 uses below, you will be surprised by some of them!
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What should you not use WD-40 on?

There are many different types of plastic, but there are two kinds that you should avoid using WD-40 on—polycarbonate and clear polystyrene plastic. Polycarbonate is a transparent plastic that is commonly used in greenhouses, and polystyrene is typically used for styrofoam and soft drink lids among other items.
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What does WD-40 actually do?

Myth: WD-40 Multi-Use Product is not really a lubricant. Fact: While the “W-D” in WD-40 stands for Water Displacement, WD-40 Multi-Use Product is a unique, special blend of lubricants. The product's formulation also contains anti-corrosion agents and ingredients for penetration, water displacement and soil removal.
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Is WD-40 a good lubricant?

Based on the MSDS sheet, WD40 does not appear to contain such additives, which may result in fatigue and/or adhesive wear. Keep in mind that WD40 is manufactured and marketed as a household lubricant for those "small jobs" or as a rust remover. For these applications, it does a fine job.
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Is WD-40 good for cleaning?

Remove tough scuff marks

Use WD-40 to help remove tar and scuff marks on all your hard-surfaced floors. It won't harm the surface, and you won't have to scrub nearly as much. Remember to open the windows if you are cleaning a lot of marks.
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What WD-40 Is REALLY For!



What can WD-40 do for a toilet?

When cleaning a toilet bowl, WD-40 works by softening the rust and lime deposits, so they can be easily wiped away. You don't need to use much of it. Simply spray on the affected area, wait a minute or two and brush it away with a regular toilet brush.
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Does WD-40 fix car scratches?

No matter how careful you are with your car, a scratch or scuff mark is going to appear. While WD-40 Multi-Use Product cannot help in situations where the metal has been damaged, it can help with scuff marks, where another car has come into contact with yours and left some paint residue.
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Does WD-40 destroy plastic?

The solvents in WD-40 can break down some plastics, and the low viscosity of WD-40 makes sure the solution penetrates deep.
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Does WD-40 damage rubber?

WD40 is just a penetrating oil spray - it's not a caustic rust remover or some aggressive chemical. Just a "water displacing" (WD) oil spray and its generally pretty safe (safe for paint, chrome, rubber, glass, body plastics - most materials cars are made out of).
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What does spraying WD-40 in gas tank do?

When the gasoline and WD-40 mixture finally reaches one of your car's cylinders, it will combust in the presence of simultaneously combusting gasoline, acting as a car fuel. But, since WD-40 is not made of as many energy dense alkanes as gas, it dilutes the combustion energy of straight gasoline.
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Does WD-40 Remove rust?

WD-40 can help remove rust from metals like iron, chrome, and stainless steel without further damaging the surface of the metal or removing the paint. The Multi-Use Product is great for loosening and removing excessive surface rust.
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Does WD-40 stop rust?

WD-40 Specialist® Corrosion Inhibitor

It has a long-lasting formula to protect metal parts by blocking rust and corrosion for up to 1 year outdoors or 2 years indoors.
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Does WD-40 remove limescale from toilets?

While it can be put to a number of helpful uses around the home, WD 40 is particularly good at softening rust and limescale deposits in the toilet (and bathroom). All you have to do is spray it on the desired section of the toilet, wait a few minutes, then scrub it away with a toilet brush.
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Does WD-40 damage car paint?

In addition to preventing bugs from hitting your vehicle, WD-40 is also a great option for removing already stuck-on bugs, bird droppings, tree sap, and grime. It won't damage your paint; just remember to rinse it off with soap and water afterwards.
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Can I use WD-40 on wiper blades?

Before we kick-off the cleaning, whatever you do, you shouldn't be cleaning your wiper blades with WD40, ever. WD40 is a water-displacer which, if you use it on your wiper blades, will leave streaks and marks and won't clear away the rain, but will make it worse. You have been warned!
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Does WD-40 swell o-rings?

WD-40 can swell rubber or buna rubber gaskets when the gasket is immersed in the fluid. If the fluid is sprayed on and wiped off, the gasket will not swell. This swelling will not ruin the gasket, however it will swell the rubber.
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Does WD-40 swell wood?

Ventilate the area well before doing this. WD-40 isn't just for squeaky hinges. With weather changes come changes in moisture, and this affects the wood and paint of a door. The door can swell and the paint may get tacky.
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Does WD-40 clean headlights?

Can WD-40 be used to clean foggy headlights? In case you have an upcoming car test, and you are wondering if you can quickly defog your headlights for approval, the answer is yes! It can be used as a car headlight cleaner.
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How long should WD-40 sit?

All you need to do is soak the screw with the WD-40 Specialist Penetrant spray and let it work its magic for about fifteen minutes or so. The WD-40 Specialist Penetrant spray will loosen the screw enough for you to remove it with ease with a screwdriver in your hand. It's as simple as that!
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Does WD-40 remove fingerprints?

Simply spray WD-40 onto a dry cloth, and rub your stainless-steel appliances in the direction of the grain. Not only will it remove greasy fingerprints and smudges, but it will also help keep fingerprints from forming. When you're done polishing off the fingerprints, wipe off any excess oil with a clean, dry cloth.
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Does WD-40 remove water spots on car?

WD-40 is great when it comes to mirror cleaning and water spot removal. It's easy to use and all you have to do is spray the liquid on to the affected area and wipe it clean with a clean cloth.
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Does WD-40 Damage clear coat?

No, WD-40 will not hurt your car's clear coat. Just like the car's paint, WD-40 is safe to use on a car's clear coat because of the petroleum-based formula. However, make sure to remove any residue from your clear coat to prevent a buildup of grime.
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Does WD-40 work on leather?

Break In Your Leather—Or Revive It!

WD-40 makes stiff leather items soft and supple. Dog collars, baseball gloves, work boots, shoes, and sandals all benefit from a spray. As a bonus, you'll remove stubborn stains which means the lubricant is particularly useful in treating vintage items.
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