What Grade of Gas are you using?

[emil_greus]

In my case i run on 91 since is the "recommended" one as per the fuel sticker and manufacturer statement in the owner manual

 

[Railroadmam]

I mostly run hi test. From time to time I'll add 87 to my half tank of hi test.
When traveling or towing I always use hi test.... I love my 4x4 Expedition!

 

[armoredsaint]

Yes. Using premium will make all 400hp available. Using regular will "detune" the engine down about 25hp or so.

i can't tell if you're sarcastic since you're Gumby

 

[Gumby]

i can't tell if you're sarcastic since you're Gumby

Normally I might be, but not when HP is involved

 

[armoredsaint]

Normally I might be, but not when HP is involved

i didn't know it was so simple, i just thought the platinum versions had a different air intake etc to make the 400 hp.

 

[Gumby]

i didn't know it was so simple, i just thought the platinum versions had a different air intake etc to make the 400 hp.

Nope. We also have a '14 Lincoln MKT with EB. If I use premium I get 365hp, if I don't then I am detuned to about 345 or something.

Honestly, for most they wouldn't really notice. I have been driving EB since about 2010 when I bought a Flex Limited with EB. Total sleeper car, basically a SHO wagon. So 10 years in EB cars, I can feel the difference when 94 octane is used vs 87. But that's just me.

 

[LokiWolf]

All EB Motor Power Ratings are based on 93. Anything less means less power.

The EB motors are tuned from the Factory for 93, anything less means there is knock, and the motor is pulling timing. You can log and VERY clearly see the difference. Even 93 under heavy load and high temps has knock and pulls timing on a stock tune.

If you really want to feel the power mix a few Gallons of E85 into a full tank. Even stock tuning can take advantage of a little. You will feel the difference especially under sustained load.


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[shane_th_ee]

All EB Motor Power Ratings are based on 93.

Expedition XLT/Limited EB power ratings are based on 89. Look it up.

 

[LokiWolf]

Expedition XLT/Limited EB power ratings are based on 89. Look it up.

And you would be wrong...



This is Fords own site, that says Premium.

Other parts of Ford’s site for other vehicles specifically mention 93.


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[LokiWolf]

And here is a 3rd Party test from Car & Driver...

https://www.caranddriver.com/features/a28565486/honda-cr-v-vs-bmw-m5-ford-f-150-dodge-charger/

F-150 Limited with the HO 2nd Gen 3.5TT is one of the 4 tested.

If you are running less than 93 in any EB Motor you are not getting your monies worth.

When I did my testing on my 17 Expy, the improvement in MPG made up for the price difference, plus I always had more power under my right foot. No brainer to me!


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