Join Date: Jun 2018
Location: Northeast Colorado
Iíve been happy with Rotella T5 15-40. If you can get T6 for just a bit more, go ahead. I change oil often enough (due to lots of dusty/dirty conditions, amount of start/stop cycles, etc.) that I go with T5, as T6 is always more $$$ out here
Hope this helps.
02 2500HD ECLB LB7, LS, Summit White, 284,xxx mi, Basically Stock, Not gonna get too crazy with it.
LDS Reman Injectors, CAT Adapter, and FASS 95 at 269,xxx Miles
(Slow) Work In Progress