T6 is the mopar recommended oil now. There is an updated owners manual available to download via ram website and it is in the diesel supplement. I have it in as my last oil change just for the low cost and convenience for availability. Opposed to ordering champion oil that I was before.I own a 2015 Ram eco with just over 50000. Only issue computer went into default mode, tb upgrade needed. Now I am asking if t6 rotella can be used in our trucks?