> I would respectfully disagree with your assessment. > Well, Maybe I don't know what I'm talking about. I just know that with my truck, in 3000 miles, its time for a change. that's with Shell rotellaT 15W-40 dino oil in a 6.9 International. What are you driving? J.D. > You say: " I would not recommend those kind of intervals for those of us > burning fossil fuels much of teh time and/or using mineral based oil in > an older diesel. Its asking for trouble." > > I have ONLY used fossil fuels in this automobile. The dozens of > professional lab results indicate the oil as new, even after 100 plus > thousand miles, with the use of bypass filtration, and still well within > acceptable limits after 10,000 miles without bypass filtration. My > results are over the course of several years, 200,000 plus miles. > > Unless having as new oil lubricating my engine at all times is asking > for trouble, I find your statement questionable, but, these are MY > results, substantiated by professional lab analysis, yours may indeed > differ. > > In any event, I think we will agree that oil analysis is imperative if > one is considering extended drain intervals, as no two engines are > identical. > > > [EMAIL PROTECTED] wrote: > >> >>I purchased a Mercedes Benz 1995 E300 diesel with slightly over >> >>100,000 miles on the odometer. Mercedes dealer impeccably maintained >> it >> >>prior to my purchase as it was under a Starmark warrantee. I'm not >> sure >> >>if it used synthetic oil prior to my purchase, but I immediately >> changed >> >>it to Mobil 1 15W-50. I then performed professional oil analysis at >> >>several change intervals, including 4,000, 6,000, 8,000 and 10,000 >> >>miles, numerous times. My lab reports suggested this motor was well >> >>protected even at the 10,000-mile change intervals using Mobil 1. >> Soot >> >>levels were under 2%, all other data within expected values. >> > >> > <snip> >> > >> > Yep, >> That is a common figure for synthetic, but you must do oil analysis to >> make sure you still ahev good protection as the oil ages. For those >> interested in conservation, it may be a good, if small measure. If you >> are not running fossil fuels in there, soot will be lower, and >> therefore, >> the oil viscocity will stay more like it should. I would not recommend >> those kind of intervals for those of us burning fossil fuels much of teh >> time and/or using mineral based oil in an older diesel. Its asking for >> trouble. >> > > > > > > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Biofuels list archives: > http://infoarchive.net/sgroup/biofuel/ > > Please do NOT send Unsubscribe messages to the list address. > To unsubscribe, send an email to: > [EMAIL PROTECTED] > Yahoo! Groups Links > > > > > >
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