Mx13 demandate tuning

[SemiSweet]

We have two demandated Mx 13s, a 2012 and 2013. I do not know who did them as we bought them as they were . After getting my isx 2350 tuned up correctly, it is easy to tell that the mx-13s portray many symptoms of bad programming…high oil and coolant temps, goofy egt temps, less than desirable power. They haven’t given us trouble yet but they are farm trucks that don’t make many miles. I am not even going to bother going on a wild goose chase trying to get them reviewed, no one has the answer, it is what it is they were cheap trucks. The new paccar motors(and Cummins for that matter) run good and reliable in fully mandated form from what I’ve been hearing. It’s all coming down to maintenance.