In my opinion, DT40 is not much better than Mobil 0W40. I don't like DT40 for these main reasons:
1) zinc not any better than Mobil 0W40
2) phosphorus not any better than Mobil 0W40
3) SUS Viscosity 210 not any better than Mobil 0W40
4) cSt Viscosity 100 not any better than Mobil 0W40
5) To maximize DT40’s benefits, you need to flush with BR30 first
That's why I switch to Mobil 5W50 after running DT40 one driving season (2 oil changes). My wear metal have continued to drop since the switch.
Regardless, Chuck, your engine looks very-very healthy.
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