Clint, STEP AWAY FROM ALL THOSE ADDITIVES!
Our most faithful, yet departed, overlord of all things Diesel, Herr Professor Doktor Marshall Booth was adamant about not using these things but sparingly. Engines were designed to run fine as they were. Use of non mercedes fluids and snake oil was to be done but once a year when taking the car out of storage or when putting her to sleep for the winter. The mystery oil has probably gunked up the engine and pistons, as well as valves. If you want quality lubricity and wear reduction, use Mobil 1, Delvac, or Rotella and change oil as usual. Diesel Purge, once a year to clean the injector (use as per instructions from vessel looping through injection pump). There is another lubrisol diesel product you can add to the tank once or twice a year for valve cleaning. Biodiesel is a viable option for better lubricity on all fronts. It will reduce carbon accumulations and scour the fuel system of all gunk. Three tanks of B20 will do wonders. As Don said, DRIVE IT LIKE YOU STOLE IT. Pedal to the metal as you climb hills, drive in S around town, so the engine works a bit harder and gets thing hot enough to burn off moisture and keep things clean. Get a compression test done. This will point to where you are having issues in the engine. Adjust the valves, as they are probably allowing for unsightly air access. Wet compression will show just who is not holding pressure and may need new rings. After that much road time, I would bet your rings are shot. Clean the engine thoroughly on the exterior. What ever it takes to get accumulated gunk off. This will show if there is a seal leak, or if you really are burning the oil. That is about all I have in my book. What I know is what Gump taught me, and may only apply to a car of her charms clay 1974 450sl - Frosch - Two tone green 1972 220D - Gump - She is green, simple and ran 1995 E300D - Cleo - Used by the Queen of Denial POS 1987 SDL - Beware Nigerian Scammers On Mar 30, 2012, at 4:41 PM, OK Don wrote: > Someone with more experience/knowledge should chime in here, but AFAIK, > there is no manifold vacuum in these Diesels to make them smoke as you > describe due to worn valve guides or valve seals. I thin you've got worn or > stuck rings. If you have been driving it gently, youve probably carboned up > the rings, etc. The usula cure is an "Italian tuneup", also known as "drive > it like you stole it". That having been siad, my highest mileage MB is only > 370,000 miles, so what do I konw? > > On Tue, Mar 27, 2012 at 10:40 PM, Rolling Hills Farm < > rollinghillsma...@yahoo.com> wrote: > >> Hi all, >> >> My beloved 1984 W126 300SD, as of today, has 698,883 miles on it. Still >> going on the original engine, with no overhaul since new. Majority of the >> miles are highway miles, and just like tractor-trailers that typically run >> a million miles with no sweat due to the fact that they stay on the >> highway, the engine is still running like a champ. About 6 or so years >> back, it started using oil, somewhere around 640K miles or so. Before >> then, it didn't even use oil between 3K-mile oil changes! Determined that >> the valve guides are leaky, thus the extra smoking and oil consumption. >> Just in the past couple months, the smoking has gotten worse. My goal >> since the day I bought the car 13 years or so ago, was to see just how many >> miles it would go without an overhaul before it absolutely gave up the >> ghost and puked. I have a parts car with a perfectly-running engine >> (unfortunately unknown mileage), which will be replacing the engine in the >> SD once it >> finally dies (car itself is rust-free and still in unbelievably great >> condition and a pure joy to drive, and after a cosmetic restoration about >> 10 years ago, is still GORGEOUS). >> >> Just wondering if anyone has any ideas on valve guide replacement. I've >> had 5 different people tell me that I should just leave well-enough alone, >> and not replace the valve guides, but rather just keep driving it, adding >> oil, and put up with the smoking. Something about replacing valve guides >> that might screw up something else and make things worse than they are. As >> I said, I want to see just how far I can push this original engine before >> it dies. I don't abuse the car; I very,very seldom drive it over 65 mph, >> and religiously do oil changes every 3K miles. It's using around 1.5 >> quarts between oil changes, which to me, is incredible given the fact that >> the engine has never been into since the day it was built. >> >> Any ideas? Smoking issue is worse than before. Every time I take off >> from a stoplight, I have a lot of blue smoke (burning oil), and when I >> start it the first time every day, it belches smoke like you wouldn't >> believe. Just in regular driving though, there's no visible smoke. Engine >> still sounds awesome (that opinion coming from comparing it to the other 20 >> or so 2.4L and 3.0L cars I've owned over the years). Power isn't what it >> used to be, but that's to be expected. I use Marvel Mystery Oil every >> other oil change, don't know if that's any help or not, but I use it. >> Someone recommended that I use some Lucas oil additive, maybe a half-quart >> every other oil change. Any advice as to how I can keep this old girl >> going as long as possible, and stretching out the miles as long as I can >> would be MOST appreciated!!! My wife jokingly tells people that I love >> that old car more than I love her, but ya know that isn't true, lol!! It's >> certainly a >> part of me, like family. I am determined to reach one million miles >> eventually, although I know there's a snowball's chance in Purgatory that >> it will happen with this original engine. >> >> Thanks in advance, >> >> Clint Lowe >> Rolling Hills Farm >> >> Nothing will make a driver more faithful to a car >> than a car that is faithful to its driver. >> Life is too short, and the road too long, >> to drive anything less than a Mercedes-Benz. >> >> www.facebook.com/rollinghillsfarm >> _______________________________________ >> http://www.okiebenz.com >> For new and used parts go to 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 >> > > > > -- > OK Don > 2001 ML320 > 1992 300D 2.5T > 1990 300D 2.5T > 1997 Plymouth Grand Voyager > _______________________________________ > http://www.okiebenz.com > For new and used parts go to 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 _______________________________________ http://www.okiebenz.com For new and used parts go to 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
