• Sign Up! To view all forums and unlock additional cool features

    Welcome to the #1 Explorer ST Forum and Explorer ST community dedicated to Explorer ST owners and enthusiasts. Register for an account, it's free and it's easy, so don't hesitate to join the Explorer ST Forum today!


What viscosity of engine oil are you using?

What viscosity of engine oil are you using?

  • 0W-20

    Votes: 0 0.0%
  • 0W-30

    Votes: 0 0.0%
  • 5W-30

    Votes: 12 85.7%
  • 0W-40

    Votes: 1 7.1%
  • 5W-40

    Votes: 1 7.1%

  • Total voters
    14

EDWYER

Active Member
Messages
510
Reactions
245
Points
52
Location
NC
Vehicle
Black 2020 ST
#2
5W-30 full synthetic.
 

Messages
2,962
Reactions
1,321
Points
252
Location
Nevada
Vehicle
'20 Raptor, '22 Explorer ST, '14 GT500, '03 F150
#4
5W30 full synthetic. Literally zero reason to run anything different.
 

OP
S
Messages
192
Reactions
77
Points
27
Location
Nevada
Vehicle
2025 ST
Thread Starter #7
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".
 

Messages
2,962
Reactions
1,321
Points
252
Location
Nevada
Vehicle
'20 Raptor, '22 Explorer ST, '14 GT500, '03 F150
#8
None of the tuners recommend doing so, so I’ll stick to what Ford recommended and tuners found no need to change.
 



Top