SVO MkII
Well-Known Member
Just in case any Ecoboost drivers happen upon this thread...The owner's manual says 5W-30 for street use and 5W-50 for the track. Motorcraft oil is cheap enough for me, so I use it. Plus, I'm assuming this is the oil that was used when they were designing and testing the engine, so it's obviously going to meet what ever requirements the engineers had in mind. I will add that my oil temp climbs to the very top of the "green" range during a 25-30 min track session. I do feel a bit better having the 5W-50 in there for HPDE.
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