I am not sure what oil was used for break in and dyno on my stroker, bought it with only that wear. I have used Brad Penn since I got it and after a season the Comp PP508 hyd cam looks great as do the lifter faces.
Going with a solid roller now and thought I better put in a bottle of break in additive as I will be using Rotella 15W-40 next. The additive came from Hughes and it says moly, not "zink". One bottle for 6 qts of oil. Sigh, I have a 8 qt pan.
Seems to me that the little stroker is hard on oil as it comes out pretty dark. Of course, the Brad Penn is dark green when it goes in too.
