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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: 19 90.5%
  • 0W-40

    Votes: 1 4.8%
  • 5W-40

    Votes: 1 4.8%

  • Total voters
    21
Messages
224
Reactions
96
Points
27
Location
Nevada
Vehicle
2025 ST
#1
Select above.
 

EDWYER

Active Member
Messages
524
Reactions
251
Points
52
Location
NC
Vehicle
Black 2020 ST
#2
5W-30 full synthetic.
 

Cruising68

2000 Post Club
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352
Location
Chicago, IL, USA
#3
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.


Sent from my iPad using Tapatalk
 

2020FordRaptor

3000 Post Club
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'20 Raptor, '22 Explorer ST, '14 GT500, '03 F150
#4
5W30 full synthetic. Literally zero reason to run anything different.
 

Messages
60
Reactions
29
Points
17
Location
Michigan
Vehicle
21 ST
#5
5W30 Mobil 1
 

Messages
389
Reactions
172
Points
37
Location
Mobile, Alabama
Vehicle
2025 Explorer ST 4WD
#6
5W30 Full syn every 5k miles.
 

OP
S
Messages
224
Reactions
96
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".
 

2020FordRaptor

3000 Post Club
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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.
 

Messages
72
Reactions
76
Points
17
Location
texas
Vehicle
2023 Explorer ST
#9
Mobil 1 FS 5w-30 (euro spec)
 

OP
S
Messages
224
Reactions
96
Points
27
Location
Nevada
Vehicle
2025 ST
Thread Starter #10
Mobil 1 FS 5w-30 (euro spec)
Excellent choice as HTHS will be at least 3.5 being a A3/B4 spec.
 

Messages
72
Reactions
76
Points
17
Location
texas
Vehicle
2023 Explorer ST
#11
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.
 

Messages
389
Reactions
172
Points
37
Location
Mobile, Alabama
Vehicle
2025 Explorer ST 4WD
#12
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.
 

Messages
107
Reactions
43
Points
27
Location
Colorado
Vehicle
2022 Explorer ST
#13
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.
 



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