BJN- PS had more wear in my engine then MMO..For me, there is no need for PS; then again I only start at -20 F..
Even my 131 said non-2007 Comp but this is a tractor and you need to play with ratios. Again, for me I would NEVER use PS again based on my UOA. YMMV
So you are saying that using Power Service diesel fuel additive showed increased engine wear in a used oil analysis?