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I'm still looking for an answer on the following: 1) Is a heavy 15w40 oil a good idea for this OM642 engine or should I go with the manufacturer recommended 5w30? 2) Can high levels of zinc cause problems with hydraulic lifters in modern diesel engines like the OM642?

Thanks for the input so far everyone! @Popsy - yes, good thinking about the leaky injector. That's quite possible. If that's the case, I'm not going to worry about it. Any idea what it takes to change injectors on a OM642 btw? @loneryder - yeah, I heard a lot about EGR really gumming up the...

Howdy oil experts, I have a 2012 Sprinter 2500 with the OM642 3.0L V6 diesel. It's got approx 140,000km on it. I had the emissions system including EGR deleted about 40k ago. About 30k ago I filled it with Amsoil Signature Series Max-Duty Synthetic Diesel Oil 0W-40. This is apparently the best...

Hello Tikka! The wear metals in your Jeep's oil look very good as well! Your engine may be doing better than mine considering my 1.5 micron bypass filter system is probably removing some of the wear metals from the oil, resulting in artificially low wear numbers. The OM642 can be a bit small...

Thank you Bailes1992, I'll look into ACEA A3/B4 type oil, although I'm delighted with the way this fill of Amsoil is performing so far. I think I'll take it to 30,000kms and test again. Considering how hard I push this little engine, the oil will take a horrible beating with the summertime temps...

Thanks for your input everyone! I wonder if the 1.5 micron bypass filter I installed also might be filtering out some of the wear metals. Any thoughts on that? ..or are wear metals typically less than 1 micron? I deleted everything that could be problematic, that includes EGR and also the PCV no...

Good evening all, I could use a little help understanding the data in the attached oil analysis. This is the first time I've had the oil analyzed since I deleted the DPF and all related emissions systems and switched to Amsoil Signature Series Max-Duty Diesel 0W-40. I installed Amsoil's bypass...