I do not have it marked on my maint. spreadsheet, but I am pretty sure I dumped in a container of Auto-Rx thousands of miles before the oil change.
2015 Subaru Forester 2.5 engine/CVT PP & M1
2001 Jeep Grand Cherokee Laredo 4.0 - PP & M1
1999 Dodge Ram 2500 w/Cummins - Rotella T6 & M1