87 vs 89 vs 93 octane - my findings

[Jeremygsu]

I get 20 MPG all the time with my 5.4 on the highway cruising. It’s got 2 overdrive gears in a 6 speed dude.

I believe it. The question is at what speed? I'm guessing 65 or less.

 

[Jeremygsu]

On my Explorer 93(E10) gets me to 4.06 0-60, same environment, E50 gets me 3.75 0-60. No other differences in hardware.

Your Explorer does 0-60 in less than 4 secs? That's better than a C7 Corvette.

 

[LokiWolf]

Your Explorer does 0-60 in less than 4 secs? That's better than a C7 Corvette.

Yep, 2020 Explorer ST, E50 tuned by ZFG.


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[Jeremygsu]

Yep, 2020 Explorer ST, E50 tuned by ZFG.


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That's nuts. Is this an AWD?

 

[JasonH]

That's nuts. Is this an AWD?

Has to be. Couldn't hook up and pull that time without AWD. Tires would just spin.

 

[JasonH]

Extended Length models have 3.73s. 6R has two overdrive gears and lockup clutch function in all forward gears 2-6. Saves gas, improves performance. But yeah, it’s just lame-o, dumb, and I’m a douche.

My HD tow EL 4x2 is geared 3.31. It's in the tow guide and confirmed using the axle code.

 

[07navi]

I get 20 MPG all the time with my 5.4 on the highway cruising. It’s got 2 overdrive gears in a 6 speed dude.

They all have "overdrive", that means nothing, plus 6 speed doesn't affect highway MPGs either. You might have the best gears in that truck in final drive for MPGs but taller gears don't automatically mean better MPGs. One step higher ratio than that could diminish your gas mileage. It's the final drive that counts on the hiway so 6 speeds and 2 OD's has nothing to do with anything here.

 

[JExpedition07]

My HD tow EL 4x2 is geared 3.31. It's in the tow guide and confirmed using the axle code.

The 5.4 was never mated with 3.31s in the EL models. 3.73 was the only option 07-14 but 3.31 became available on 2WD models for the EcoBoost. 4WD EL EcoBoosts are also all 3.73.

 

[JExpedition07]

They all have "overdrive", that means nothing, plus 6 speed doesn't affect highway MPGs either. You might have the best gears in that truck in final drive for MPGs but taller gears don't automatically mean better MPGs. One step higher ratio than that could diminish your gas mileage. It's the final drive that counts on the hiway so 6 speeds and 2 OD's has nothing to do with anything here.

You are clueless lol

 

[LokiWolf]

They all have "overdrive", that means nothing, plus 6 speed doesn't affect highway MPGs either. You might have the best gears in that truck in final drive for MPGs but taller gears don't automatically mean better MPGs. One step higher ratio than that could diminish your gas mileage. It's the final drive that counts on the hiway so 6 speeds and 2 OD's has nothing to do with anything here.

Huh? That is exactly what Overdrive’s are designed for!

Yes, under certain circumstances lugging in too high an overdrive can decrease MPG, but on flat ground OD increases MPG.

IF OD’s did not help with MPG, why does the 10Spd have additional? Even on the 5.0...

Moving on.


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