There is a thread over in the diesel UOA forum that has analysis of the Kirkland oil. Looks like a pretty good antiwear additive package.
2004.5 Ram Cummins High Silver
Hi, first post here. Showing high silver in oil analysis this go around. Bought the truck last year, 3 oil changes since owning it. Rotella T the first time and Kirkland on this report. In between first and second report, I replaced Injectors and the 3 injector wiring harness in the valve cover...
bobistheoilguy.com