Another bump. Always dealer serviced at specified intervals (5k) and mineral 5w30, currently at 199k. Ran a 6100 miles OCI this time, and switched to M1 5w30 (regular, not EP or HM), and stuck with the yzzd3 filter. With M1, I think I'll be good for 11-12k intervals since it's almost all freeway miles, no towing, and occasional snow wheeling.
