Very nice UOA. Typical of a Dmax.
Atypical of a Dmax/Amoil UOA. As much as anyone else, it puzzles me a bit, but in a good way. I wonder if the VPBE (and whatever was used before that) has a similar chemistry package, and the Cu reaction has already taken place? In no way am I claiming that happend for sure; just wondering why the absence of the Cu here?
Presuming the results stay like this, I'd keep running that load of Amsoil; it's doing a nice job. You'll need to run out the OCI to around 30k miles or so to break even on your ROI (I presume you bought the fluid and didn't get it for free, etc).
I would also disagree with Blackstone here; there is little reason to do another UOA in 2-3k miles. In fact, I see no reason whatsoever. Your total wear metal counts are low, the wear rates are low, and the oil could go much further. The previous UOAs show the engine is doing well (the particle streak aside); there is no contamination intrusion. I realize there is no TBN listed, but after 10k miles (on an oil that is supposed to be good for 3x the OEM OCI) I'd be willing to bet the TBN is OK at this point, and worthy of more mileage. This UOA shows the current load of Amsoil is doing well; why waste the money 2-3k miles from now on a UOA? I'd suggest going another 10k miles or more before another UOA.
Bottom line: great engine, great oil, great UOA. Keep running it.