BenzWorld Junior Member
Date registered: Jan 2017
Vehicle: 2011 E350 Bluetec
Location: Austin, Texas
Mentioned: 0 Post(s)
Quoted: 12 Post(s)
Only taking into account the OM642 engines... I was curious to know what other owners are doing to maintain these engines? Iíve bounced around on oils... from non recommended 10w50 Mobil 1 race oil to the recommended MB229.51 and 229.52 oils from a few different brands (Mobil 1 ESP, LiquiMoly and Ravenol)... at the moment, Iím trying out Rotella T6 (which is MB229.31... I think) . I did not like the race oil... after 2 oil changes at about 4,000 miles each, I noticed the oil would leave a speckled film. It would cover the inside housing of the oil filter and you could see it in the opening for the crankcase, on the metal plate. I did an engine flush and cleaned it out. Not sure what to think of the Rotella T6 yet but the recommended oils were nothing to be that excited about. After about 3,000 miles... give or take 500 miles...they seem to all cause the engine to sound the same. The funny thing is this is how the engine sounds since the day I purchased. I bought the car used with 80k miles. I wish I knew what the engine sounded like new... obviously, the engine sounds smooth and solid with a fresh change of oil but after the 3k mark there is the faint unmistakable diesel sound... not sure why it happens only then... and considering the miles I put on the car, it would be nice to save some dollars somewhere. I find it a little funny that I save money on fuel consumption but spend the savings in servicing... It may have been a simpler choice to go with the petrol or gasoline version.
Iíve also adopted an intake cleaning and DPF cleaning routine that I have started doing myself. Itís not extensive but does seem to keep the CEL or Check Engine Light away. Always the same issues revolving around the emissions system. Iíve replaced NOX Sensors, EGR Valve, EGR Pressure Sensor and have almost come close to replacing the EGR Cooler... this is not including the replacement of the Oil Cooler Seals and the Rear Main Seal. At one point I thought there was a problem with my scanner... had to go to an independent shop to hear that they saw the same issue... thatís when I figured it canít be the part I just replaced... has to be excess carbon/soot build-up...? I checked Sprinter Forums and they seem to suffer similar issues.
Considering my revolving issues, the car really is great to drive. I drive it daily and is steady as a rock at highway speeds as well as quiet. City driving...eh... not much can be said on that. BMW and Audi make a much quieter diesel engine, but I have noticed that the engines in the Mercedes CDIís are very quiet in a city environment.
Sorry for being winded... thanks in advance for any responses if I donít respond right a way.