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Message:: [QUOTE="BadThad, post: 623398, member: 17261"]Thanks for the link. As ususal for CU, there's misinformation mixed in with the true facts.   Absolutely untrue! However, if you are dumb enough to expose your acetone to light, radicals can form and that may do some surface damage. Pure, undegraded acetone WILL ABSOLUTELY NOT HURT ANY COIN, no matter what the metallic content.   There's no "salts" in olive oil, salts are ionic and will not dissolve in oil. However, there are organic acids and other organic molecules in olive oil, it's a complex mixture. Acetone is about the poorest solvent choice one can make for the removal of oil. Non-polar solvents, such as xylene, are the best solvents for the removal of oil. These examples are why I absolutely do not visit that forum. I've said it before, there are some good, knowledgeble people on there....but there's a heck of a lot more people that just spout-off junk as if it's fact and will defend their false facts to the death.....then two or three other idiots will jump in to defend the first guy that's wrong. :hammer:[/QUOTE]