Ditto to squid and all on the site , I feel IT has kept me from having issues with this truck, I had a 5.9L cummins new in "92" and it was totaly different in the way you had to deal with it, and they have been my only two diesel trucks, although I've been around plenty of super duty fords,cummins dodge's and a few duramax gm's that my friends own... so I had little experiance with diesels, but nothing that would have had prepaired me for this one.....thanks for the great site for the 6.7L ISB cummins ,we all appreciate your hard work!!!!!!!