Originally Posted By: 2010_FX4
Originally Posted By: jk_636
Your right, it is being ignored.
I came on here to find out if the copper level was in fact too high, and find out where it could be coming from.
Few have commented on the copper level and
no one has given any input on where it is coming from. Everyone is so up in arms about oil additives that they cant seem to bring themselves to analyze the UOA. If I wouldn't have said that this sample contained MMO, no one would have ever been able to tell the difference just by looking at this UOA. I appreciate everyones opinions, but I know that the MMO and 5 minute motor flushes are not causing any detriment to my motor. If it was, there would be a lot more than just a negligable increase in copper in the UOA, and I would be seeing, hearing or feeling a change in the motor. Im not going to quit using them, so we may as well just move on.
I have no horse in this race--never used MMO, never plan to, and have no opinion either way. But until you have a baseline from which to compare you cannot say either way (and neither can any of us with absolute certainty) whether MMO is causing detriment or not. However, you are replacing 17% of the MS5K with a low grade solvent in the form of MMO and other than some cleaning properties, it is not adding any benefit to the composition of the oil (the VOA proves that).
Skepticism aside, what most people are inferring is that MMO is affecting the oil which in turn could account for the increase of copper in the UOA. Copper is typically leached from oil coolers or bronze engine parts such as bushings or bearings--while your readings are not excessive, they were flagged. Lastly, the flashpoint of the oil has been reduced from about 465 (MS5K 5W-20) to 380 and since your engine does not have fuel dilution with a reading of
Therefore in some ways, your mix has less robustness than straight 5W-20 oil (which you indicated the engine was back specified for) and 5K on MS5K is not a stretch by any means. Obviously, you will do what you think is best and you are absolutely free to make that choice, but if it were mine, I confirm whether or not there was actually a varnish/sludge issue in the engine. In the absence of such, I would use PCMO only and stop the MMO treatment and take some UOAs to compare. The other option is to try a different oil--the sodium/titanium anti-wear pack in MS5K may not be optimum in your engine. Try a SOPUS product that has moly/boron/ZDDP and see how it fares (without MMO). Good luck!
This definetely makes sense. I dont have an oil cooler (not externally mounted anyway) so that narrows it down. Good info, thanks!