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Author Message   Adrian Tinkerer Username: Adrian Post Number: 246 Registered: 08-2006 Rating: N/A Votes: 0 Posted on Wednesday, May 27, 2009 - 05:56 am:    I would assume that valve oil is what brass players use for the valves on their trumpets etc - certainly NYoil, IIRC, is made for musical instruments. I, too, am intrigued by the diluted oil! Something thinner and non-volatile, presumably.