The world's number one multi-purpose lubricant.
Typical uses of WD-40 around the home include
* Stopping squeaks in door hinges.
* Loosening rusted or seized components (i.e., nuts and screws) for easier removal.
* Spraying on hand tools, prior to storage, to help prevent rust
* Cleaning objects affected by grease, caked-on dirt or adhesive residue (such as that left behind by sticky tape)
Typical uses of WD-40 in automotive repair include
* Driving moisture out of the high and low-tension electrical components of an internal combustion engine (e.g. cleaning and drying the inside of the ignition distributor cap) so that it will start, particularly on cold days
* Loosening nuts and screws
* Cleaning wheels
* The WD-40 company claims it is safe for use on all motorcycle chains, but recommended cleaning products vary among chain manufacturers. Tsubaki Chain and RK Chain recommend WD-40 to clean or displace water on all types of chains, including sealed ring
* Leatherman, the manufacturer of the popular multi-tool of the same name, recommends WD-40 as a post-cleaning lubricant to displace water and prevent corrosion.
* In Boston, officials repaired the bell atop city-owned Faneuil Hall with daily treatments of WD-40 over the course of a week.
* In cleaning, WD-40 displaces crayon and ink from computer and television monitors.
* WD-40 can be sprayed on snow shovels and snowblower components to prevent snow from sticking to their surfaces.
* WD-40 is a fine product and has many uses, but it is not real contact cleaner. It leaves a sticky residue that can attract dust.
* WD-40 should never be used in locks for the same reason. Locks should be cleaned with isopropyl alcohol, allowed to dry thoroughly and lubricated with dry graphite powder.
* A sample of WD-40 that was sprayed onto a piece of steel plate and left outside at -25 for about 20 minutes froze.