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<p>[QUOTE=&quot;BadThad, post: 833927, member: 17261&quot;]Wow, we really have some posts in this thread now. LOL</p><p>&nbsp;</p><p>What Jim said is correct. The atoms in a metal are so tight there&#039;s no &quot;porosity&quot;. However, I can see how a rough surface may appear to be porous to the layman but it&#039;s simply a matter of increased surface area. When a coin is oiled, it will fill those &quot;voids&quot; and give the surfaces a smoother appearance....however...it really is just an optical illusion.</p><p>&nbsp;</p><p>Oil is definately good for cleaning because it&#039;s mixture of aromatic, short, medium and long-chain hydrocarbons.....depending on the distillation fraction. Really, I have no problem with conserving a coin with oil, but I firmly believe the oil should be completely removed after the operation is done.[/QUOTE]</p><p><br /></p>

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