Rotella T4 15W40
I will be changing the oil in my L5P Dmax for the first time, because I have used up my two (2) free dealer oil changes. From reading several user posts, it appears the L5P is easy on oil just like previous generations of Dmax engines.
The recommended oil viscosity is 15W40 in the Dmax or 5W40 for low temperature applications. Since I live in the South, I will be sticking with conventional 15W40 for year-round use. Rotella T4 15W40 is the oil that I am considering, and I would appreciate any feedback from current Rotella T4 users on how this oil has performed in the Dmax.
2017 L5P 3500HD
Last edited by OkDually; 11-02-2019 at 05:15 PM.