Hurridale Posted June 27, 2004 Report Share Posted June 27, 2004 Junkyard and the other posters in this thread are right; WD40 is a SOLVENT, far more than a lubricant. The "WD" stands for "water displacement" (the "40" was from that it was the 40th formula the inventor tried). That's why it worked so well when you got water in the old distributor cap (back when cars had points). It is a great product, but it is NOT a great lubricant, nor does it provide a protective cover on par with gun oils and greases designed to provide only that function. It also works very well at stripping off protective cosmoline/oil from coated parts. Obviously, it if strips off protective coatings so well, it is not a good choice for gun finishes. I use it, and I think it should be in everyone's toolbox. But like any tool, it needs to be used for what it is, and not for what it ain't. Link to comment Share on other sites More sharing options...
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