Why do you change your underpants? A few skid marks are not a problem, right? The problem with a dirty engine is that some of the crud may block/partially block an oil passage, leading to problems. Also a cleanish engine will stay cooler because oil is also a cooling agent. End of the day they are not designed to have half a tonne of sludge sitting in the engine and if it is possible to clean/keep clean it is advised to do so. If it was just in the bottom of the pan it would not be such a drama but when the top end is sitting under half an inch of black goo it is a worry.
Hendrik with fresh underpants this morning Peter T. Arnold wrote: > I'm not sure why all of this somewhat impassioned talk goes on about a > "Clean Engine" > What is the reason that I should keep the internals of my engine > "Clean" > NOW don't misunderstand me, I am not in favor of Dirty engine but, I > do not get too excited if there is 1/4" of sludge in the bottom of my > pan. That's why the pan was designed the way it is, to hold settled > stuff for the lifetime of the engine. > It seem that changing oil on a regular basis does a fine job of > keeping the Lifters/Oil Passages/ Oil pick-up/rockers etc in a > serviceably clean condition. > What is to be gained doing any more? > > BTW, I switched my Benz from DINO to Mobile1 for the cold start > improvement at about 150Kmi. I changed oil at 10Kmi, analysis at that > time shoed the oil was about 30% spent. I began changing at 20KMI, > support by anaysis I could have gone to 25 or 30. No leaks, no oil > related problems. > > -- > > Pete Arnold > > > > _______________________________________ 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