Zoltan Finks wrote: > Question: Does the rule apply here as it does with my 240D - the one > that says do not add engine oil until the level gets down to the add > mark (in other words, don't add when it's half way between the full > and add marks?) > > Now I have another thing to turn more hair grey. When I start the > engine, I hear the tappets knock (hope that's good terminology for a > diesel). And the oil gauge takes a lot longer than I want to respond - > maybe some five seconds. When the gauge does respond, the engine idle > slows a bit maybe, and the tappet noise lessens. > > Now, I notice that there seems to be a tappet noise constantly as it > idles in my driveway. Unless it's an exhaust leak, but I doubt it. > I'll drive it and see how long it persists - maybe is lessening as the > engine warms up? > > I appreciate all advice here - these are big questions in my mind as I > hope this is not a lemon.
Are you using Mobil 1 oil (at least 5W40 or 15W-50 - NOT 0W40)? Have you replaced the two "O" rings on the oil filter cap stem recently (they last about 20-30 kmi)? If the answer to both of the above is yes, then your engine is worn and you MIGHT want to consider lifter replacement of any that are TESTED and shown to be bad. If the car isn't driven or run for a long lime, lifter noise will usually be louder until the engine is run at 2000+ rpm for 5 minutes or so. Marshall -- Marshall Booth Ph.D. Ass't Prof. (ret.) Univ of Pittsburgh School of Medicine [EMAIL PROTECTED] _______________________________________ 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
