octane rating

[brycewise]

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]

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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[lowda9]

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.

 

[Flaco]

93 octane fuel, 5w30 synthetic

 

[TyphoonFiST]

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]

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.

 

[lowda9]

A 50 weight? Why? I could see a 30 weight....a 40 weight is pushing it....IMO.

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I was jk. I use 5w20.

 

[TyphoonFiST]

I was jk. I use 5w20.

Funny guy!

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[KnockOff]

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]

^^^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.