Exactly. I get oil analysis at every 50 hours with the oil change in the 60 year old Continental engine in the Cessna. They tell me what the change is from the previous sample and compare it to what is expected for this engine from their experience. I had the oil analyzed when I was driving the MBs a lot - found that with Mobil 1 I could easily go 15,000 between changes - makes the expensive oil a bit less expensive per mile. I don't drive much anymore - one trip to town per week, and most longer distances are covered above the ground, so I haven't had the oil analyzed in the cars yet. I probably should just to see what's happening in the truck - at three years old it only has 7,000 miles. I change it yearly - just because.
On Sat, Feb 13, 2016 at 11:10 AM, G Mann via Mercedes <mercedes@okiebenz.com > wrote: > From my background in aviation, in particular, jet engine powered aircraft, > oil inspection is particularly valuable. The cost of replacing a jet engine > after catastrophic failure [it happens] can easily run over $1,000,000.00. > A single component failure which requires engine tear down could easily run > above $100,000.00, plus down time [revenue time] for the aircraft. > > So, regular oil analysis inspection is part of the plan. Oil samples are > inspected for wear materials as well as "oil condition". Each component in > the engines has an individual "structural fingerprint" when seen by a gas > spectrometer [very expensive machines, btw.]. These reports are kept as > part of the maintenance record for the individual engine, as a hedge > against very expensive component failure. > > In the case of a 30 year old piston engine, the same application of > technology can apply, however, just like a jet engine, ONE oil sample by > it's self has little value. The value of oil analysis is in accumulated > history of that engines operation and sample results. From that can be > established "trend information" about wear materials, carbon from > combustion increase in the oil, etc etc etc.. > > To reap benefit, you first have to do a baseline analysis. then track > particle increase or decrease from component wear trend, through successive > samples. > One sample by it's self, unless catastrophic failure has already started, > has little value. > > -- OK Don *“Travel is fatal to prejudice, bigotry and narrow-mindedness, and many of our people need it sorely on these accounts.”* – Mark Twain "There are three kinds of men: The ones that learns by reading. The few who learn by observation. The rest of them have to pee on the electric fence for themselves." WILL ROGERS, *The Manly Wisdom of Will Rogers* 2013 F150, 18 mpg 2012 Passat TDI DSG, 44 mpg 1957 C182A, 12 mpg - but at 150 mph! _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
