The first results - the high iron & copper and loosing compression tells me that your cylinder walls & bearings are wearing at an accelerated rate. I believe that the analysis company is suggesting the oil pump as a possible cause but the cause could just as easily be a poor rebuild, improper break-in or running out of oil sometime in the engine's past.
The second cause could be the same as the first or the waste oil may have come out of a deep fryer made of mild steel & what's in the oil is from the engine's blow by. Thanks, Tom Hargrave www.kegkits.com 256-656-1924 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Peter Merle Sent: Sunday, October 26, 2008 3:04 AM To: Mercedes Discussion List Subject: [MBZ] Oil analysis problem Sent oil samples from my 5 300D 's to the lab ( 3 x W123's , 1x 300GD ( OM617 ) and 1xW124 ) and got satisfatcory results from 3 off them . The one W123 ( the only one running Mobil 1 ) had high levels of Copper and Iron ( 29 and 71 ppm ) after 2000 km. Sodium, Siicon, Al , Cr , particulates, soot are all low . Lab suggested the oil pump is worn and I should test oil pressure . Well the oil pump had done only 60000 km and oil pressures are good. The engine is loosing compression and oil consumption has increaseed since engine rebuild a few years ago so something is not right. Any ideas anyone? Am going to change oil to delo 400 and then see what the results are. Regarding the other car with poor results - I had just bought it - has been running on WVO for 30000 km - well its oil had high levels of iron ( 93 ppm ) as well as particlates - diagonis by lab was that oil filter was being bypassed ie filter blocked. is this a problem with WVO ? Does the stuff get into the engine oil and block the filter? Peter _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com No virus found in this incoming message. Checked by AVG. Version: 7.5.549 / Virus Database: 270.8.3/1744 - Release Date: 10/24/2008 6:08 PM No virus found in this outgoing message. Checked by AVG. Version: 7.5.549 / Virus Database: 270.8.3/1746 - Release Date: 10/25/2008 5:55 PM _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
