I knew you wouldn't be able to let this one go by. You know.....you might just be wrong once. I do see better power and improved mileage.
Just like the last time this came up, it's not your money, not your engine....so please don't try to impart your beliefs on everyone else. There are dozens of reasons why Cat or Cummins aren't going to make any recommendations and thera are huge financial reasons why trucking companies would not participate.
Don & Mary
2014 Newmar Dutch Star - All Electric - 450 ISL
2016 GMC Canyon 4WD Crew Cab