>Wouldn't the creep properties be from the silicone? Stated another way, why is >WD40 bad and Silcone Naptha o.k. ? > >Greg WD40 , as Newton reported, doesn't contain silicone. It's petroleum distillates, like gasoline, motor oil, Vaseline, and road tar. WD40 thickens with time, collects dust, and turns to goo. Anyone who has used the stuff on anything at all can tell you that. It soaks into wooden parts, like any petroleum distillate, and pollutes them. That is why it shouldn't be used in pianos. It's just not a functionally appropriate flange lubricant. The silicone/naphtha mix ages quite gracefully in comparison, doesn't screw up the wooden parts, and works quite well. That's why it's better than WD40 for use in pianos. Neither creeps any more than any other fluid, so that's a moot point. Ron N
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