For me it all boils down to what do the BIG trucks run? Mostly IL6 diesels, some v8 diesels are fine, but even with the cummins name on it it could be a stinker! Every engine maker has stepped it it a time or three and first generation engines IMHO are questionable! Four or five years from now they may have the bugs worked out same with the eco diesel not sure I want the first one! Look how long it took to "fix" the 6.7 Cummins!