It makes sense, just like having blood tests and urinalysis at doctor's office that "drawing" oil should give an indication to engine performance.
My dad's ole mechanic was rather intuative and used to "smell the exhaust" to determine how "rich" the fuel mixture was, if the car was burning oil or coolant. The guy was also deaf and without instruments could "feel the engine" when he set the timing. > From: "LarryT" <[EMAIL PROTECTED]> > Reply-To: Mercedes Discussion List <mercedes@okiebenz.com> > Date: Thu, 6 Dec 2007 07:29:01 -0500 > To: "Mercedes Discussion List" <mercedes@okiebenz.com> > Subject: Re: [MBZ] Synthetic Oils > > As Tom says, Oil Analysis tells much more than what's happening with the > oil. Since the oil in one way or another comes in contact with virtually > all the stuff in the engine compartment. > > The Oil Analysis Report is basically grouped in 3 sections. 1st, the > properties of the metals typically found in an engine are analyzed with > their levels noted. If a level is too high, that contaminate of flagged. > Next, the oils additives are quantified to define what their levels are. If > high, they are noted and flagged. Next, the Oils' physical properties are > tested - the SAE, amount of fuel in the oil, any water or Glycol in the oil > and a few other things. A spreadsheet showing the analysis results for a > couple of hundred reports are shown at http://members.rennlist.com/oil > > Also, as Tom suggested, many engine problems can be determined by > checking the results. For example, when the Silicon level is too high > (again, as Tom mentioned) a problem with the air filter intake possibly > exists. I have seen air filters improperly seated or missing the o-rings > which allowed intake air to bypass the filter and bring air filled with dirt > into the engine. Also, on diesel engines, the Soot is measured which is a > good indication of Blow by - which allows contaminated air to get past the > rings and into the oil. Thus a high level of soot can indicate weak rings - > or use of an oil which does not properly suspend and carry the contaminates > to the filter for removal. > > Obviously some of these bits of information do not lend themselves to > easy fixes but knowing about a problem often opens up new possibile > solutions. > > HTHs > > Larry T (67 MGB, 74 911, 78 240D, 91 300D) > www.youroil.net for Oil Analysis and Weber Parts > Test Results http://members.rennlist.com/oil > PORSCHE POSTERS! youroil.net > Weber Carb Info http://members.rennlist.com/webercarbs > . > > ----- Original Message ----- > From: <[EMAIL PROTECTED]> > To: "Mercedes Discussion List" <mercedes@okiebenz.com>; "Curt Raymond" > <[EMAIL PROTECTED]> > Cc: "Diesel List" <mercedes@okiebenz.com> > Sent: Tuesday, December 04, 2007 2:18 PM > Subject: Re: [MBZ] Synthetic Oils > > >> Oil analysis is not just about your oil. It also uncovered leaky head >> gaskets, >> unfiltered air intake and accelerated engine wear. >> >> For example, an oil analysis can tell you that you have abnormal cam lobe >> wear >> by the type & amount of metals found in the oil. This may lead you to >> discover >> (in a 1972 4.5 liter gas engine, BTW) that the plastic spray bar keepers >> have >> worn out and most of the oil destined for the cam lobes is actually going >> elsewhere. >> >> Or you may find higher than normal silica in the oil, which would indicate >> unfiltered air entering the engine and might lead to the realization that >> the >> new K&N filter you installed wasn't such a good idea afterall. >> >> Tom >> www.kegkits.com >> >> Quoting Curt Raymond <[EMAIL PROTECTED]>: >> >>> >>> I'm of the mind that extended oil changes are something you work up to. >>> How do I know 20,000 is safe if I don't try 19k first and so on? >>> >>> Besides what works well for one engine may not work well for another. As >>> Marshall said you have to decide whats right for YOUR engine. >>> >>> -Curt >>> >>> Date: Tue, 04 Dec 2007 17:07:44 +0000 >>> From: [EMAIL PROTECTED] >>> Subject: Re: [MBZ] Synthetic Oils >>> To: Mercedes Discussion List <mercedes@okiebenz.com> >>> Message-ID: >>> >>> >> <[EMAIL PROTECTED] >> t> >>> >>> Content-Type: text/plain >>> >>> Curt, >>> Why Change it? My car ran 20KMI between changes. Pull a sample and >>> have it analyzed, I'm betting you are only 50% depleted. >>> >>> Pete >>> >>> >>> --------------------------------- >>> Be a better sports nut! Let your teams follow you with Yahoo Mobile. Try >>> it now. >>> _______________________________________ >>> 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 >>> >> >> >> >> Thanks, >> Tom Hargrave >> 256-656-1924 >> >> _______________________________________ >> 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 Free Edition. >> Version: 7.5.503 / Virus Database: 269.16.13/1170 - Release Date: >> 12/4/2007 10:52 AM >> >> > > > _______________________________________ > 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 _______________________________________ 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
