General 6.7 Discussion (2011-2016)
I just rolled past 100k miles on my 2015 F350. The first two oil changes were with Motorcraft oil, the next couple were with Mobil 1 (expensive), next couple were Rotella 5W-40 (cheap, but loud ticking), then have run Valvoline PBX for the next 70k miles with great success.
Switching gears to...