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WD-40. Can't empty the whole can

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Ok, I get what you mean. If it's no longer pressurized, it's done. Either return it if you can, or punch a hole and drain. In my experience, the Bonus Size cans stop spraying right side up with about 25% left not due to losing pressure but due to some internal valving I'm guessing. I simply spray the can upside down. Happens quite frequently.
 
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Are your cans exposed to the cold? (I guess it gets cold in far east LA.)
I will sometimes place an aerosol can in very ,almost hot , water. Take it out occasionally and shake.

I have turned the can over, cover the bottom with a heavy rag and slightly punctured the bottom with a screwdriver. It will hiss , once it stops , you can open it up
 
Are your cans exposed to the cold? (I guess it gets cold in far east LA.)
I will sometimes place an aerosol can in very ,almost hot , water. Take it out occasionally and shake.

I have turned the can over, cover the bottom with a heavy rag and slightly punctured the bottom with a screwdriver. It will hiss , once it stops , you can open it up


My cans are exposed to high heat and never have I had one that would completely empty before the propellant dissipates. But a man can't live without his WD-40. lol

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This is the company's excuse for an explanation.

We have covered every issue, shake, rattle and roll. Exposure to cold and hell fire temperatures . So there is definitely an issue.
 
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