show me who in this thread made this claim?
"Others, however, are claiming that these small particles which are less than 34 microns (most being less than 15 microns) harm an engine and they offer no proof that it does."
"Others, however, are claiming that these small particles which are less than 34 microns (most being less than 15 microns) harm an engine and they offer no proof that it does."
