In perusing various threads on this site, I have read several references to the EaO that allude to its ability to "clean" engine oil to a level that exceeds that of virgin oil. I find this claim rather dubious. Can one or more of the experts on this site explain precisely how this occurs? Also, certain threads have indicated that the EaO's weakest filtration ability in comparison to the PureOne or M1 is the <5 micron particle range. Is this an accurate assessment?