I just completed another oil change on my 2015 Ecodiesel 4x4. Here is the UOA from this change and my other ones. The wear metals continue to drop and I am very happy with the results on this (almost) 10,000 mile OCI. The Rotella T6 5w40 (CJ ver.) seems to be working great and has plenty of life left in it but I don't want to exceed the 10,000 OCI while under warranty. I filled it with T6 (CK).
Rick
Rick