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  1. General 6.0L Discussion
    Hey everyone, just wanted to share this with anyone who might want to know. Lately I've been having large deltas in EOT and ECT, as well as a hard start when hot. Recently d it an oil change and switched to mobil 1 5w40 delvac and I'm quite surprised. Oil temps dropped significantly from almost...
  2. 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...
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