WD-40 is primarily a penetrant and moisture displacer, making it perfect for loosening stuck nuts and bolts, silencing squeaky metal hinges, and removing sticky residues. To avoid attracting dirt or damaging surfaces, use it only on metal-on-metal friction points, and avoid it on rubber seals or items needing thick, long-term lubrication.
Mower and saw blades, dolly wheels, garage door rollers, pulleys and chains—if it's got to move, keep it lubricated with WD-40 Multi-Use Product. A classic saying among product users: "If it doesn't move and it's supposed to, spray it with WD-40." Use WD-40® Multi-Use Formula to prevent rust.
Key Points
Yes, you can use WD-40 Multi-Use Product (the original formula) on the Bambu A1, as it is officially recommended by Bambu Lab for lubricating the X and Y axes. However, it is a solvent rather than a long-lasting lubricant, so many 3D printing enthusiasts prefer to use dedicated silicone or synthetic lubricants (like Super Lube).
No, WD-40 is not good for arthritis. It is a harsh industrial lubricant and penetrating oil, not a medical treatment.
For immediate joint pain relief, apply an ice pack for 15 minutes to reduce swelling or a heating pad to relax surrounding muscles. For faster, over-the-counter relief, apply a topical NSAID like Voltaren Gel or a menthol-based rub (like Icy Hot), or take an oral anti-inflammatory like Ibuprofen or Aleve.
Short-Term Exposure. If you breathe in too much of the vapor, you may feel dizzy or lightheaded. Skin contact can cause irritation in some people, and eye contact can lead to redness or discomfort. WD-40 is flammable, so using it near open flames or heat sources is dangerous.
Spraying WD-40 Multi-Use Formula up a faucet—specifically on hard-to-turn knobs, valve stems, and diverter spouts—is a common plumbing trick used to loosen mineral buildup, eliminate squeaking, and protect internal metal parts from rust and corrosion.
While the classic WD-40 Multi-Use Product contains a small amount of lubricating oil, it is primarily a penetrant, solvent, and water displacer. It works best for freeing up stuck parts, cleaning away old residue, and stopping rust.
While some internet hacks suggest using WD-40 to restore wipers, you should generally avoid using the standard, petroleum-based WD-40 on wiper blades.
Spraying WD-40 in your toilet bowl dissolves stubborn hard water stains, rust, and lime deposits. Its petroleum-based formula breaks down grime and leaves behind a slick, water-repellent coating that prevents new mineral buildup and waste from sticking to the porcelain.
Yes, there are many products better than WD-40, depending on what you are trying to do. WD-40 is primarily a water displacer and cleaner. It is a poor long-term lubricant and a weak penetrating oil.
There is no functional or safety reason to keep WD-40 in a refrigerator. In fact, it is better stored at room temperature. However, you might hear about this because WD-40 is an excellent product for your fridge.
While WD-40 is a great multipurpose solvent, it is a poor long-term lubricant and should never be used on items that require specialized lubricants, come into contact with food, or are made of sensitive plastics and rubber.
WD-40 works almost instantly, but the time required depends on the task:
Yes, WD-40 is surprisingly effective at cleaning shower glass. Thanks to its water-displacing and solvent properties, it quickly breaks down tough soap scum and hard water streaks without requiring harsh scrubbing.
People use WD-40 as a lubricant because it provides an immediate, slippery coating that silences squeaks, frees up sticky mechanisms, and works in a pinch.
This test simulates the ability of a liquid to penetrate tight spaces and crevices. WD-40 Specialist® Penetrant sports a Nail Climb Test result of 10 minutes for a 1.25 cm reach. Its competitors, on the other hand, take between 15 and 20 minutes to reach the same distance.
Top 26 Most Unusual Uses for WD-40 Multi-Use Product
Yes, WD-40 can help clear certain clogged drains. Because of its solvent and water-displacing properties, it is great at breaking down soap scum, grease, and grime, and it can also loosen stuck drain stoppers or rusted internal pipe connections.
Conclusion. WD-40 Multi-use Product helps to remove rust stains on fabrics, carpets, tiles, and even bathroom tubs. Therefore, it is safe to say that it is the best rust-removing spray available in the market.
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.
No, WD-40 does not repel mice. While there are popular myths suggesting the strong chemical smell deters rodents, it is largely ineffective and does not solve a mouse problem.
WD-40 can damage plastic, rubber, wood, and painted surfaces. Avoid using WD-40 anywhere that may be at risk of fire, like gas appliances or electrical components. Use WD-40 on metal surfaces, like bolts, nuts, and metal-on-metal friction spots.
Some have even tried spraying sore joints with WD-40 as they would to fix a squeaky, door hinge. But this folk remedy is not proven to work and may even be harmful. WD-40 contains petroleum distillates than can cause drying and irritation of the skin.