Okay what is a safe good fuel additive for the newer cummins, I had my old 96 that I could feed anything but I don't want to hurt the new one. And is there anything I should check for PM stuff on the truck. Its got new Transmission, steering box and parts, tie rods and ends, has banks 6gun whats good safe number to run it on its 1-6 and is on the fly changing safe and does it take 50 miles... before the new number stage takes hold? just trying to to learn a little. thanks guys