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octane rating

Messages
30
Likes
5
Location
West Palm Beach, FL, USA
#1
In the owners manual it seemed to suggest 87 octane fuel. This along with the Low 5w - 20 oil rating this also seems too low for the car and that ford is trying to make the car cheaper to own rather then run correctly. what do you run in your stock vehicles for both fuel grade and oil?
 


Rocketst

Active member
Messages
633
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322
Location
Chesapeake, VA, USA
#2
I use 93 octane. The ECU in the car will advance or retard timing automatically based on your fuel. The better, the more hp although the increases I felt were small without proper tuning. The light oil is due to the tight tolerances of the engine and the fact it's a turbo from what I've gathered on here.

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Messages
110
Likes
45
Location
Vancouver
#3
In the owners manual it seemed to suggest 87 octane fuel. This along with the Low 5w - 20 oil rating this also seems too low for the car and that ford is trying to make the car cheaper to own rather then run correctly. what do you run in your stock vehicles for both fuel grade and oil?
I run 5w50 in mine. Dunno why, just didnt feel right in my gut to go with the Ford manual.
 


TyphoonFiST

7000 Post Club
Premium Account
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Rich-fizzield
#5
I run 5w50 in mine. Dunno why, just didnt feel right in my gut to go with the Ford manual.
A 50 weight? Why? I could see a 30 weight....a 40 weight is pushing it....IMO.

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CSM

Senior Member
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593
Location
Cleveland, OH, USA
#6
On stock tune you can run 87 just fine. It will pull timing to compensate. 93 will unlock most power on stock tune.

You can run 5w30 if you want. In fact I think the FiST in other countries calls for 5w30. I belifve 5w20 is to help with economy and emissions in US.
 


KnockOff

1000 Post Club
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357
Location
Menifee
#9
I believe 5-30 is a ford approved alternate weight. I have used 5-30 since 1k miles. 20 just seems too thin. My old focus calls for 5-20, 242k miles on 5-30. I do think 20 is for emissions.

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M-Sport fan

9000 Post Club
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Location
Solebury, Pa.
#10
^^^There ARE large variances in the actual viscosities of the thousands of 5W-30s out there.

Red Line 5W-30 (the original, highly additized, 'good stuff' in the white concal bottle) is MUCH thicker in HTHSV (High Temperature High Shear Viscosity), at ~3.8 HTHSV, than let's say Ravenol DXG 5W-30 ( at~3.0 HTHSV), or any of the on the shelf at Wal Mart 5W-30s, some of which are UNDER a 3.0 HTHSV. [wink]
 


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