What viscosity of engine oil are you using?

[SugarMouth]

Select above.

 

[EDWYER]

5W-30 full synthetic.

 

[Cruising68]

5W-30 full synthetic.

Ditto. Stick to good brand names and you are GTG. I usually run Mobil 1 but I have no issue using others.


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[2020FordRaptor]

5W30 full synthetic. Literally zero reason to run anything different.

 

[billygoat]

5W30 Mobil 1

 

[Gadgtfreek]

5W30 Full syn every 5k miles.

 

[SugarMouth]

Looks like most are 5W-30.

I prefer a higher HTHS. With the EcoBoost being prone to fuel dilution (viscosity falling out), plus a tune that increases cylinder pressures, my engine will stay on 0W-40 or 5W-40. I like the extra "insurance".

 

[2020FordRaptor]

None of the tuners recommend doing so, so I’ll stick to what Ford recommended and tuners found no need to change.

 

[Loaded05]

Mobil 1 FS 5w-30 (euro spec)

 

[SugarMouth]

Mobil 1 FS 5w-30 (euro spec)

Excellent choice as HTHS will be at least 3.5 being a A3/B4 spec.

 

[Loaded05]

Excellent choice as HTHS will be at least 3.5 being a A3/B4 spec.

I switched to that one due to my oil test results on other oils. I will be sticking with it for the foreseeable future.

 

[Gadgtfreek]

I went 40 on my Coyotes, but I beat those cars. Going to have Speed Diagnostics perform a couple of samples on the Explorer before I do anything else. It's a daily driver.

 

[Mekks082]

Mobile 1 ESP 5w30 with a 3.5 HTHS has given me the best results. The ESP 0w30 apparently has better base oils and some esters but I have not tried it yet.

The Motorcraft 5w30 syn broke down under a 5w20 in less than 5k miles.