Granted they are different engines, but I tried the Mobil 1 0W-40 in my 2001 Subaru Forester and the results were not as good as what I got on Rotella T6. So far this PP Euro 0W-40 looks great; my mileage is down slightly on the highway so I may try going 50-50 with the PP Euro 5W-30 to thin it out a little after I dump this load. Based on current use and my lack of indoor maintenance facility the change will probably be late October/early November and around 16k on this OCI.
With the boost to TBN and AW adds from the Biotech, I don't think one 16k OCI will have any negative effects... I want to see the data from the long mileage instead of finding out I dumped it too early.