Robert,
There is a lot of confusion over the uses of WD-40. There are a few versions of emails that ciruculate frequently and list many benefits and uses for WD-40. Here are some comments which I've sent to friends in regard to those emails about WD-40:
Here are some caveats and some comments on WD-40. This is my opinion and my recollections from what I have learned about it over the past few years:
- I've heard that WD-40 is great for cleaning & protecting guns and ammo. But I'd definitely prefer to use good oil on gun parts instead of WD-40. And I'd never let WD-40 get near the base of ammo. It can penetrate into the primers and make them inert.
- Don't use WD-40 in place of lubricating oil. WD-40 is 80-90% kerosene and will thin out or flush out existing oil on the part needing lubrication. WD-40 is not a lubricant - it is a water displacer which contains an extremely small percentage of lubricants. If used on electric motors in place of real oil, it will destroy them.
- I hide the WD-40 around our house. I don't want anything that should be oiled being treated with WD-40 instead.
- The formula for WD-40 is generally regarded as: 80-90% kerosene 5-10% tallow oil 5-10% light oil Trace amounts of other goodies such as antioxidants, wetting agents, etc.
The manufacturer denies the accusations that their product is mostly kerosene and they claim that there is no kerosene in the product. This is technically true, but misleading since they are using Stoddard Solvent, which is pretty much functionally equivalent to kerosene.
WD-40 is useful for many of the listed applications, but in many cases it is a very expensive way of applying a bit of kerosene. Charcoal lighter fluid is cheaper and number 1 or number 2 fuel oils are even cheaper yet. But the spray can of WD-40 is often much more convenient and 1 can, while overpriced, will usually last many years.
I hope this helps a bit. The important warning is that you should not use WD-40 in place of the proper lubricant for the item you are maintaining. Many motors have been ruined because WD-40 was used in place of the proper lubricant.
Every homeowner should have a small inventory of good lubes such as 3-In-1 Oil, lithium grease, silicone spray, Teflon spray, etc. Buy quality products - you use them infrequently and you will be paid back for the small extra price. For example, Teflon (PTFE) produces range from excellent to junk.
(Never put a cheap PTFE produce in with any engine oil. It will do more harm then good if it is the wrong version of PTFE or if its particle sizes are incorrect for the application.)
I've copied one version of the many emails below. I hope this all helps. Your question was short and my reply is very long, but there is a lot to be said about WD-40.
Good luck, Gideon
HERE IS SOME COMMON EMAIL TEXT LISTING USES FOR WD-40. I'm just listing the email text; I don't endorse any of these uses:
Here are some of the uses for WD-40: Protects silver from tarnishing. Cleans and lubricates guitar strings. Gives floors that 'just-waxed' sheen without making it slippery. Keeps flies off cows. Restores and cleans chalkboards. Removes lipstick stains. Loosens stubborn zippers. Untangles jewelry chains. Removes stains from stainless steel sinks. Removes dirt and grime from the barbecue grill. Keeps ceramic/terra cotta garden pots from oxidizing. Removes tomato stains from clothing. Keeps glass shower doors free of water spots. Camouflages scratches in ceramic and marble floors. Keeps scissors working smoothly. Lubricates noisy door hinges on vehicles and doors in homes. Gives a children's play gym slide a shine for a super fast slide. Lubricates gear shift and mower deck lever for ease of handling on riding mowers. Rids rocking chairs and swings of squeaky noises. Lubricates tracks in sticking home windows and makes them easier to open. Spraying an umbrella stem makes it easier to open and close. Restores and cleans padded leather dashboards in vehicles, as well as vinyl bumpers. Restores and cleans roof racks on vehicles. Lubricates and stops squeaks in electric fans. Lubricates wheel sprockets on tricycles, wagons and bicycles for easy handling. Lubricates fan belts on washers and dryers and keeps them running smoothly. Keeps rust from forming on saws and saw blades, and other tools. Removes splattered grease on stove. Keeps bathroom mirror from fogging. Lubricates prosthetic limbs. Keeps pigeons off the balcony. (they hate the smell) Removes all traces of duct tape. I have even heard of folks spraying it on their arms, hands, and knees to relieve arthritis pain. Florida's favorite use was "cleans and removes love bugs from grills and bumpers. The favorite use in the State of New York--WD-40 protects the Statue of Liberty from the elements. WD-40 attracts fish. Spray a LITTLE on live bait or lures and you will be catching the big one in no time. Also it's a lot cheaper than the chemical attractants that are made for just that purpose. Keep in mind though, using some chemical laced baits or lures for fishing are not allowed in some states.
It also kills wasps, bees and the such. Truly remarkable product.
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