Kirk, No it is in the form of sulfur compounds that agglutinate (clump together) as much as they can until they are trapped and held in the cellulose fibre (very tiny at this stage). Left to circulate as in a stardard engine they continue to agglutinate until they are large enough to be trapped by the surface full flow filter screen (25 microns and above). The trouble is the larger they are the more serve as a target and the more they attract water with the result that if not trapped and removed acid is much more quickly created and as a result damage is far quicker. If you have ever left your oil in for too long before doing an oil change and seen how the oil seems to be a lot more gooey than new oil you will know what I mean. This is because the carbon particles which are left to circulate combine together with the acid. B.r., David
----- Original Message ----- From: kirk <[EMAIL PROTECTED]> To: <biofuel@yahoogroups.com> Sent: Sunday, May 27, 2001 5:51 PM Subject: RE: [biofuel] Re: Oil Filter Prices > If you froze it would most of the sulphur drop out? > > Kirk Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/