Ford Ecoboost to 6.2L Economy

[Samsonsworld]

Time for a new truck. I'm looking at a F350 4x4 crew long bed with the 6.2l. I got really spoiled to mid 16's mpg cty/hwy mixed on the F150 for my commute. So come on...I can take it. How much of a hit will I take on economy?

[ShinerBock]

It appears I did remember correctly....

Ford vs. GM: Twin-Turbo Showdown

"We should note Ford tells us that its power outputs improve
slightly, measuring 385 horsepower and 430 pounds-feet of torque
when using premium fuel, instead of the regular fuel the owner's
manual recommends."

Regular fuel = 365 hp / 420 lb-ft

Premium fuel = 385 hp / 430 lb-ft

[ShinerBock]

Samsonsworld wrote:

Hybridhunter wrote:
recommends premium for heavy use, the 6.2 in the F250 and F350 does not

Actually, my manuals read the same for both. For optimum performance, use premium.

The difference in performance between engines is quite noticeable.

Hmm, I did not notice that but sure enough there it is in the Super Duty owners manual just like it says for the Ecoboost in the F150 owners manual.

2017 Ford Superduty Owners manual - Page 185

"For best overall vehicle and engine
performance, premium fuel with an octane
rating of 91 or higher is recommended. The
performance gained by using premium fuel
is most noticeable in hot weather as well
as other conditions, for example when towing
a trailer."

The F150 owner's manual says the same exact thing because the engine will advance timing and increase power output if premium fuel is detected. I would imagine the 6.2L does the same. It is not that it is needed just like the Ecoboost, but if you want the engine to increase power for the best overall performance then you can add premium. I believe the Gen 1 3.5L Ecoboost increased its performance to 385 hp and 430 lb-ft when running on premium fuel from what I remember from a PUTC article.

Some here actually believe the Ecoboost requires it when towing heavy, but they are misinterpreting what Ford is saying here. I guess they haven't gotten up to snuff on the latest technology like wide band knock sensors and cam phasers that can adjust timing and engine power output on the fly unlike the old days when engines had fixed timing.

Engines that run on E85 do the same thing. They will alter timing and increase power output when running E85, but this does not mean you need to run it. It just means you will gain more power and performance from engine when running it.

[Samsonsworld]

Hybridhunter wrote:

Again, that was not what you originally said or posted......you keep "double speaking"......The EB recommends premium for heavy duty usage, it is not the same advisement or context as the 6.2 in the F250, which does not refer to usage, but to best performance, which all the recent owners manuals for the more recent generation of Ford powertrains suggest.

And to state the obvious, a 7000# truck does not perform as well as a 5000# truck with similar power......I never suggested it did either.

The EB manual says for best performance. I don't find where it says premium is required? Here is an excerpt: "Premium fuel will provide improved performance and is recommended for severe duty usage such as trailer tow."

And here is an excerpt from the 2017 F250 manual: "For best overall vehicle and engine performance, premium fuel with an octane rating of 91 or higher is recommended. The performance gained by using premium fuel is most noticeable in hot weather as well as other conditions, for example when towing a trailer."

They look like they are both saying the same thing to me.

My F150 is almost 6000lbs. So yes, there is at least a 1000lb difference, maybe a little more? But I have contemplated that, too. I've towed with much more weight on the F150 than I did on my recent trip towing with the F250, including 4 more people and all of their carp...which I promise weighed more than 1000 lbs. This last trip was just me and one of our dogs.

[Hybridhunter]

Samsonsworld wrote:

Hybridhunter wrote:
recommends premium for heavy use, the 6.2 in the F250 and F350 does not

Actually, my manuals read the same for both. For optimum performance, use premium.

The difference in performance between engines is quite noticeable.

Again, that was not what you originally said or posted......you keep "double speaking"......The EB recommends premium for heavy duty usage, it is not the same advisement or context as the 6.2 in the F250, which does not refer to usage, but to best performance, which all the recent owners manuals for the more recent generation of Ford powertrains suggest.

And to state the obvious, a 7000# truck does not perform as well as a 5000# truck with similar power......I never suggested it did either.

[Samsonsworld]

I had a Toyota that took 8k before mpgs peaked, so I know its definitely a possibility. My f150 took about 3k.

[spud1957]

Samsonsworld wrote:
And just for the record, I'm scratching my head a little. Is my new truck not broke in, does it weigh more than I think, did I get a lemon....idk, maybe I'm missing something.

Mine had over 5000 miles on it when I bought it, but I have read on a few FTE posts that there is an improvement in performance after 5000 miles.

I came from a 2008 V10 and do feel the 6.2 is equal to or better than it. Pulling close to 10k I lock out 6 and drive it like it’s stolen.

S

[Samsonsworld]

And just for the record, I'm scratching my head a little. Is my new truck not broke in, does it weigh more than I think, did I get a lemon....idk, maybe I'm missing something.

[Samsonsworld]

Duplicate

[Samsonsworld]

Hybridhunter wrote:
recommends premium for heavy use, the 6.2 in the F250 and F350 does not

Actually, my manuals read the same for both. For optimum performance, use premium.

The difference in performance between engines is quite noticeable.

[spud1957]

Samsonsworld wrote:
OK. My bad. Just the HO. I knew I'd read it somewhere.

Hey....no problem.

Sorry if my post came off as rude or condescending . Was not my intent.

I knew the F150 6.2 was using it and I should have made that point in my post.

S

[Hybridhunter]

The F250 makes that power on regular.

You guys are really reaching to back up the inaacurate statement that the EB has more high end power as was posted. It does not, and it is in fact the EB that recommends premium for heavy use, the 6.2 in the F250 and F350 does not.

Krikey - Lets hear the next round of spin.

[Samsonsworld]

OK. My bad. Just the HO. I knew I'd read it somewhere.

[ShinerBock]

spud1957 wrote:

Samsonsworld wrote:
The 6.2l's numbers are with premium fuel. You'll see a little asterisk on all of Ford's literature. The EB's is with regular. Put premium in it and guarantee the peak numbers will be close...at sea level. But I don't live at sea level. The 6.2l loses power a lot faster with elevation. I also think a turbo helps in hot weather. You might ask my thinking before jumping to conclusions next time.

Yeah......you’re going to have to post proof about the premium use for the 6.2. Never have I seen that.

Here’s a 2016 brochure.

https://www.ford.com/services/assets/Brochure?make=Ford&model=SuperDuty&year=2016&postalCode=15001

2017 brochure.

http://assets.forddirect.fordvehicles.com/assets/2017_Ford_SuperDuty_J1_CA/NGBS/Nameplate_Specificat...

He is correct. The dyno power numbers he posted were from the F150 6.2L which had higher output numbers and used premium fuel to get there.

Page 6 at the bottom 2014 F150 Brochure
" 5-6.2L horsepower and torque achieved with 93-octane premium
fuel"

The 6.2L in the Superduty only required 87 octane, but had 26 less hp and 29 lb-ft less torque.

Although I never needed to use premium fuel in my F150 Ecoboost even when towing over 9,500 lbs in the Texas heat. The manual said it was recommended if I wanted the best performance(i.e. bump in power) but it was never needed.

[Samsonsworld]

I never said it requires premium.

Even if, you're still losing 10hp for every 1000 feet and the torque curve is not nearly as flat. Maybe my reasoning is wrong but The EB tows easier and passes better. Period.

[FishOnOne]

Agreed... The 6.2 requires regular grade only.