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Why do WD40 spray cans always quit working?

Big Bad Dad

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Southwest/ Central Va.
What are the complaints about the new WD40 nozzles? I have started buying the ones that flip up the little straw, and like them so far. Have not had any of them long enough for them to go dead yet. But, I really like NOT having to search for one of the straws, or have it blow out while I am using it. The bigger 12OZ cans are $4.99 at Lowes, which is cheaper than anywhere else. And I also use Liquid Wrench and/or PB Blaster for penetrating too. The WD is great for cleaning up, removing glue, and light quickie lubes...
 
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Ji m

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The Northeast
my last few WD40 cans crapped out with about 1/4 can left.

I cut open the can,
and pour it in a coffee can with WD40 scrawled across the lid.

I keep it next to the coffee can with water in it next to the grinder & drill press.

Need to quench something in water, or drip a little oil on a drill bit or whatever,
the cans are right where I need them.

FWIW, Marvel Mystery oil is in a condiment dispenser (squeeze bottle) for air tools,
and Kroil, PB Blaster & Liquid Wrench cans are scattered around the shop.

I can't wait for the Liquid Wrench cans and their fragrance of death to be gone. :eyecrazy:
 

Advan

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May 25, 2014
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Ontario, Canada
Every can I've had in the last 5 years or so has failed before being empty as well! Now, I buy these. For the amount of WD40 I use, I dont mind the extra $1-2 per can.

4KTU7_AS01
 

bwringer

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Jan 1, 2013
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Indianapolis
I don't use much WD, but I prefer to buy it in the gallon and use a squirt bottle. Cheaper that way per oz, and doesn't use an aerosol.

Same here. Gallon jug, sprayer.

I use WD as a relatively inoffensive parts cleaner or solvent. It smells pretty mild, it won't hurt paint, rubber or plastic, and it does a decent job of removing sticky stuff, grease, and general filth.

Basically kerosene without the stench.
 

Radix2

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May 28, 2014
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the thumb!, MI
Yep my cans all seem to go bad these days too. I wonder if it has to do with being stored outside where it freezes and thaws with the temperature ? Now that I think of it, my can in the house is still OK..?
 

Schurkey

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Oct 27, 2011
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The Seasonally Frozen Wastelands
This is about the 5th can of spray I've had over the years that quits working, they either lose pressure or the nozzle don't work or the stuff only dribbles out. That's it I'm not Buying this stuff anymore. It really doesn't work that good anyway. My buddy that works in a diesel shop and uses WD40 everyday say the same thing. Is they something better that lasts? BCD.
WD-40 doesn't work well enough to bother with. They're doing you a favor by making it difficult to use.

Justice Brothers sells a product called "JB-80". They claim it's "Twice as good" as WD-40.

They lie.

It's TEN TIMES better.
 

Corndoggeh

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Apr 2, 2016
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Ballistisol, Kroil, or that other one from last century cause perpetual complaining from wife.

My father and I both enjoy the smell of kroil and ballistol, its the exact opposite for the GF or any other woman in the family so its also perfect as a repellent!
 

SgtHawkUSMC

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Feb 5, 2016
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US
I think I have seen more cans of PB Blaster fail than WD40.


FWIW, I cans of varying products depending on what I'm using it for.
+1. I've had at least three or four cans of PB Blaster fail on me in the last year or two. Just last night while trying to spray bumper bolts... drip, drip, drip... I'm done with PB personally. WD40 has always worked fine for me. If WD doesn't cut it, then the heat wrench will take care of it.
 
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cheechi

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Feb 29, 2012
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Triad, NC
I think you can buy that size at either TSC or Northern, I know it's somewhere local to me I've seen that size.

Does anyone know what threads the gallon cans of WD40 and PB blaster use? I'd love to get a pump for them they spill too much filling small bottles. something like this would be ideal

41TWObwKAEL.jpg
 

Kiwi Canuck

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Langley BC
This is not WD-specific, but I've done it with various aerosol products. Remove the spray nozzle and hold a rubber tire valve on the can. Give it a couple shots of compressed air with a tire chuck, with regulator set at 75-80 psi. It will usually give you enough pressure to empty the remaining contents.

Bill

This works great, I've been doing this for years, I pulled all my old cans of WD40 that I hadn't thrown away and recharged the gas in them.

I cut up an old bicycle tube and used it, 5 mins work and it's so sweet to get the last 30% out of the can.

1WXkaYKL_o.jpg
 
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cheechi

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they are. However, most things most people do with WD40 I do with 3 in 1 between those two. The exception being WD40 is pretty useful for cleaning.
 
OP
B

Bottlecapdigger

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Dec 29, 2015
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Ontario
This works great, I've been doing this for years, I pulled all my old cans of WD40 that I hadn't thrown away and recharged the gas in them.

I cut up an old bicycle tube and used it, 5 mins work and it's so sweet to get the last 30% out of the can.

1WXkaYKL_o.jpg
im going to try this later. BCD
 

nbpt100

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Oct 19, 2016
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This trick does work!.......You can also do this to spray paint cans or any other aerosol can. I don't know how many cans of something I have throw away with product still in it. I am sure all of the mfg's don't want you to know this trick. You can just use a rubber tip on your hand air gun.....If you don't have one, cut off a valve stem from a bike tube like Bottlecapdigger did above.

Thanks!
 
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subvet

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Dec 5, 2015
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Rising Sun, MD
This is not WD-specific, but I've done it with various aerosol products. Remove the spray nozzle and hold a rubber tire valve on the can. Give it a couple shots of compressed air with a tire chuck, with regulator set at 75-80 psi. It will usually give you enough pressure to empty the remaining contents.

Bill

X2
I do the same thing
 

LS6 Tommy

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Dec 27, 2013
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Northern NJ
I bought a 3 pack of the big cans at Costco 25 years ago when the small can I had ran out. I still haven't finished the first can. Someone gave me an empty "flip straw" can and I took the nozzle off for use on my older cans because I lose the straws all the time. Haven't had any problems with that, either.

Tommy
 

nbpt100

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Massachusetts
I bought a 3 pack of the big cans at Costco 25 years ago when the small can I had ran out. I still haven't finished the first can. Someone gave me an empty "flip straw" can and I took the nozzle off for use on my older cans because I lose the straws all the time. Haven't had any problems with that, either.

Tommy


I am the same way with WD40.....i can't recall the last time I bought it at a store. I have a few cans around that must be be 25 yrs old. I did get one of those flip straw cans at a yard sale for pennies and I could never get the straw to seal correctly....it just sprays all over the place. I thought it was a great idea but not made well. I guess I don't use it that much and usually prefer something else over it.

I am not sure you can single out WD40 for this problem.....if you try to use the can upside down or close to it, you can get propellant to discharge and no much, if any, of the fluid. This is one way to end up in this situation.

To the real theme of this thread the technique described is great and it is not only WD40 spray cans that run out of propellant too soon. I would say 25% of the spray cans I have, regardless of what is in it (paint, lubricant) this seems to happen.
Good Luck filling your spray cans.
 
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