Cecil, As I understood oil gets black over time due to fuel that goes past the rings and dilutes it and when the cylinder fires some exhaust goes by the piston rings and that is what turns the oil black again over time. How ? does this type of oil stop that. John Hervey -----Original Message----- From: Cecil Longwisch [mailto:dmc1982@xxxx] Sent: Saturday, January 03, 2004 8:13 PM To: dmcnews@xxxxxxxxxxxxxxx Subject: RE: [DML] 15W40 oil brand I just pulled the pan off my engine after using only Mobil 1 in it for the last 9 years. ( no problems but tapping the block for turbo installation) The pan was clean with absolutely no sludge or grit. The car only has 26k but it is over 20 years old too. I have pulled apart quite a few engines and this is by far the cleanest pan I have seen. It has made a believer out of me. I am sure there are many excellent oils but for the occasional use many of our cars get I like the synthetics. Cecil Longwisch #10663 To address comments privately to the moderating team, please address: moderators@xxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/