Thread: What is the main ingredient of WD-40?
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Old 06-21-2012, 10:11 PM   #6
Curmudgeon
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Default Re: What is the main ingredient of WD-40?
As I recall it was DMSO , an industrial solvent , which was found to be an effective joint pain reliever about 20 years ago . Possibly WD40 contains DMSO as a solvent .


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