Can I use it on my mountain bike wheels and chain?

You COULD in a pinch but shouldn't, you'll want to find an appropriate lubricant that isn't also a penetrant. Basically, this isn't lubey enough for your needs.

Can I use it on door hinges that are squeeky?

You can, and it will get into the hinge quite well and should stop the squeak. But it will evaporate over time, so I tend to use oil, such as 3 in 1 or even motor oil. Let it drip from the top and wipe off any residue. I have also raised the pin a bit and let the oil drip into the hinge.

Does it cause harm to car paint?

Yes. Paint is oil based and so is wd 40.

Is it suitable for garage doors that get hung up

Yes, however you are better off using WD-40's Specialist Gel Lubricant for a garage door. The gel lubricant will stay in the general area where you spray it, regular WD-40 will run down the track provide less friction control where you need it.

Smart Straw | Desertcart Ireland

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€ 196.87

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Sold byAmazon IrelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ WD-40: The secret weapon every pro manager swears by!

SMOOTH OPERATOR - Lubricates hinges, gears, chains, and pulleys for seamless movement.
TRUSTED BULK VALUE - 12-pack ensures you’re always stocked for home or office maintenance emergencies.
MULTI SURFACE POWER - Effortlessly removes grease, grime, sap, and sticky residues from any surface.
PRECISION SMART STRAW - Sprays 2 ways for targeted or wide coverage—never lose the straw again.
ULTIMATE RUST DEFENSE - Protects metal surfaces by blocking moisture and corrosive elements.

WD-40 Classic Formula is a versatile 12 oz multi-use spray that drives out moisture, prevents rust, frees stuck parts, and lubricates moving mechanisms. Featuring a smart dual-action straw for precision or broad spray, it’s the go-to solution for maintaining metal surfaces and mechanical parts in both office and home environments.

Specifications

ASIN	B00JIHTCQ4
Best Sellers Rank	#1,507 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #12 in Industrial Lubricants
Brand	WD-40
Brand Name	WD-40
Container Type	Can
Customer Reviews	4.8 out of 5 stars 1,825 Reviews
Flash Point	131 Degrees Fahrenheit
Global Trade Identification Number	10079567490057
Included Components	Smart Straw
Item Form	Spray
Item Type Name	Dry Lubricant
Item Weight	1.06 Pounds
Liquid Volume	12 Fluid Ounces
Manufacturer	WD-40 Company
Material	Metal
Model Number	490057CT
Number of Items	12
Package Information	Can
Part Number	490057CT
Recommended Uses For Product	Office,Home
Specific Uses For Product	General Maintenance and Rust Prevention in Office and Home Environments
Unit Count	12.0 Count
Viscosity	Medium to low

Reviews

J**N

auto lube

great lube

11.04.2026

W**W

Good bulk price.

As described. Fast delivery

29.03.2026

D**R

Don’t spray on you breaks

While WD-40 is a miracle worker for door hinges and rusted bolts, you should never, ever spray it on your car's brake rotors or pads.

6.01.2026

G**Y

WD-40 Original Formula, Multi-Use Product with Smart Straw Sprays 2 Ways,12 OZ [6-Pack]

Item received as described.

6.04.2026

G**A

Perfect!

18.03.2026

C**Y

Awesome

The product came fast, easy to use, and cheapest i could find

6.05.2026

P**E

Cheap price.

10.02.2026

J**N

They work great

15.04.2026

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

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Received my product in pristine condition. Great service overall.

1 month ago

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