Forum Discussion

F5Pro's avatar
F5Pro
Explorer
Feb 28, 2020

Motorcraft 10W30, 5W40, Rotella or Mobil 1 for 6.7

Just curious about what oil to put into my Powerstroke. Book calls for 5W40 (full synthetic) for towing 1000 miles. Local Ford dealer uses 10W30 as standard oil change oil. There are other diesel oi...
Tow Vehicles
KD4UPL's avatar
KD4UPL
Explorer
Feb 28, 2020
I'd do like I always do on all my vehicles. I use exactly what the manual calls for. I do not deviate. Why in the world does everybody think they are smarter than the engineers who designed the engine?
I'm a fan of Rotella. I've been using it form many years and have had no engine problems in any of my trucks. My current Duramax is at over 260,000 miles on Rotella and the engine runs great.

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