PeachParts Mercedes-Benz Forum - View Single Post - new engines,and autoscrew machine cutting oils

iwrock · #4 07-09-2017, 03:11 PM

I haven't heard of any gaskets on MB diesels failing due to heat - I do know that early OM642 owners (like myself) inherited problems with seals made from an inferior material that shrank over time and cause oil leaks. The timing chain failure seems to be limited to those built sometime around the 2010-2013 era, which has been tied to chain stretch, not lubrication failure. Turbo problems, well those seem to be limited to variable geometry portion of the turbo getting stuck - not really a part that's lubricated with oil (though I could be wrong). Also haven't specifically heard of any problems with loss of lubricity due to the oil being too thin - the lubrication problems I've heard of are due to sludging - some speculating that the oil is either being ran too long, or becoming contaminated from operation.

What I do know is that my OM642 does require a fair bit more service than say an OM617 or OM603, but it's all in the name of efficiency. I get 30MPG on the freeway with the AC on, and normally get 22-23 in the city while commuting. It's definitely warm under the hood, but not abnormally - at least not compared to other new cars. I use/abuse the heck out of my diesel, and haven't really had any issues!