Fuel grade required for the 2nd gen

[Truckzor]

There is a 23 hp and 40 ft-lb (at rear wheels) difference between 87 and 93 on the 2017 3.5L Ecoboost engine found in the normal F-150. Both torque and hp only show differences above 4250rpm; below this engine speed the traces are identical regardless of fuel AKI.

This difference will likely be slightly larger for the H.O. version of the 3.5L found in the Gen2 Raptor, due to the higher intake manifold pressures and increased peak cylinder pressures along the torque curve. In other words, the Raptor will make at least 23 rwhp more on 93 than on 87 (as expected), although this will only be noticeable while running at WOT above ~4250rpm.

Takeaway: For daily driving at partial throttle positions, there will be no measurable differences between the 87 and 93 AKI fuels. At full throttle operating conditions, there is a measurable power increase above ~4250rpm.

I am in the automotive industry, and my source for this data is a reputable third-party automotive test facility that The Big 3 utilize for competitive benchmarking.

Makes sense to me. Ford published a 10 or 11 horsepower difference for the NA 6.2. The 3.5 EB HO would naturally lose even more power on shit gas.

Thanks for sharing.

 

[Frank N]

I thought that someone was going to say you can run the truck on water if this kept up. Woweeeeeeeeeeeeeeeeeeeeeeeeeee.

You can run a line from your weephole right into the tank.

 

[gryGhst17]

I get my gas at Costco. I'm sure this makes a difference in some universe...


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[jabroni619]

I said OFFICIAL documentation from Ford, not an aftermarket tuning company. I could care less about 5Star or any other tuner, nothing against them though.

As to why Ford "recommends" a premium fuel, do you know anything about marketing?

Please tell me what marketing goal Ford is trying to achieve by making you falsely think you need to spend more for gas to get better performance?

Sounds more like you want to believe you're not missing out on performance by being cheap on what you feed the truck. We have dyno numbers and we have fords OFFICIAL recommendation for best performance. You ARE leaving performance on the table. Whether or not you want to believe it is not relevant.

 

[Spartan1]

I think the cool thing here is that there is no "required" fuel grade. You can switch it up if you want to. I typically use shell V power Nitro 93 octane but I have put in 87 and 89 as well. I have trouble finding 91. I did a little research and found out that the additives are important and not just the octane rating. All gas stations and gas that they sell are not created equally.

 

[omar510]

I can't wait to **** you all off when I start experimenting with e85

 

[Deleted member 12951]

If I had a GEN2, I would do the same thing as I do on my GEN1. Run 87 the majority of the time. Run 91 or higher when you off-road. That is the only time I put in premium.

 

[jaz13]

I can't wait to **** you all off when I start experimenting with e85

You might be joking, but I believe Ford says to not use anything above e15.

 

[Monster]

91. I had some backfires after one tank of gas, the trip home from the gas station, in sport mode. Never happened again. I only use 91.

 

[xxaarraa]

There is a 23 hp and 40 ft-lb (at rear wheels) difference between 87 and 93 on the 2017 3.5L Ecoboost engine found in the normal F-150. Both torque and hp only show differences above 4250rpm; below this engine speed the traces are identical regardless of fuel AKI.

This difference will likely be slightly larger for the H.O. version of the 3.5L found in the Gen2 Raptor, due to the higher intake manifold pressures and increased peak cylinder pressures along the torque curve. In other words, the Raptor will make at least 23 rwhp more on 93 than on 87 (as expected), although this will only be noticeable while running at WOT above ~4250rpm.

Takeaway: For daily driving at partial throttle positions, there will be no measurable differences between the 87 and 93 AKI fuels. At full throttle operating conditions, there is a measurable power increase above ~4250rpm.

I am in the automotive industry, and my source for this data is a reputable third-party automotive test facility that The Big 3 utilize for competitive benchmarking.

Thanks for sharing that, I'd be curious to see the actual results. It does sound logical.

Now all you magazine racers who insist on 93 octane please tell me how often you run a 5700 lb truck with a 10 speed tranny at higher than 4250 rpm when redline is only 6k? Unless you are driving around town like a clown (which some of you sound like you are anyway) that is a negligible situation in everyday life. Ergo, no power difference between 87 and 93 in real life. Which is what my butt dyno says all along.

If you drive like a sane person, the 10 speed hardly ever gives you a reason to be over 4250 rpm in everyday life. Hell, even when I am towing my 5000 lb trailer, usually the only time it goes over 4250 rpm is when it auto downshifts on downhills or while coming to a stop in tow/haul mode.