cummins x15

[Running rough]

My guess is, it's to early to tell, it is still the same block as isx15 so time will tell if cummins corrected it's known issues, going back to the 2350 vs the 2250 counterbore fretting issue, I would say it is probly safe to say, that the fretting issue has defintlely gone done, I hear of very little premature counter bore failure in the 2350 in my area but I could be wrong in the big scale,