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Old 03-19-2018, 12:39 PM   #1
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Anyone had a diesel and an EcoBoost?

i am interested to hear from people who have towed both with a diesel and an ecoboost, and their impressions of the comparison.
i realize that it matters how much weight you are towing but it would be interesting to see how they compare towing the same trailer with either engine.
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Old 03-19-2018, 12:54 PM   #2
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Kevin I have to guess that most people who've had both a diesel and an Ecoboost for the same trailer have a BIG diesel pickup rather than a medium-sized diesel like your X5. I haven't towed my 26U with anything but the F150 but have driven many diesel vehicles over time. The Ecoboost has a few of the pleasant diesel characteristics like gobs of low-end torque, but is not marvelously fuel-efficient. I see 20-21 hwy most of the time (without the trailer) and that's partially because I run about 78-80 on the highway.

Towing I see more like 11 in the flatlands and less in mountainous areas, but it's perfectly happy to tow the 6500-lb 26U at the speed limit on most climbs.

What are you plotting?
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Old 03-19-2018, 01:11 PM   #3
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When comparing to a 3/4 diesel pickup from any vendor, there is no comparison at all.

Not downing the EcoBoost, but it is designed to allow six cylinder gas engine perform as a mid-sized V-8 gas engine when required and offer better mileage when not under a load.

As David mentions, even that claim is dubious.

They won't replace a big block gas engine, much less a diesel.

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Old 03-19-2018, 01:29 PM   #4
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Well if you are only towing 17' Caravel, you really don't need either.

But for conversation sake, I had a 2011 Ecoboost with max tow and 3.73 gear. It towed the 25' just fine with plenty of power. However, in the Rockies and Sierras, when on secondary roads with 6% -10% grades, it's a bit different story. Oh it will haul up the grades as fast as you want. However, I experienced high temps on both engine and trans in the summertime, Enough to have to pull over and let things cool off. Going down hill, regardless of downshifting to 3rd or even 2nd, you are going to be riding the brakes. This all became even more evident with the 27'.

I just traded the F150 in for a 2017 Chevy 2500 Duramax and all of those issues have gone away. Just turn on the tow/haul mode, flip on the exhaust brake, set the cruise control and it basically drives itself. No more drama in the mountains.

And by the way, I also towed with a V8 Touareg and a V10 diesel Touareg so I have done the SUV deal as well.
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Old 03-19-2018, 02:25 PM   #5
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I have an Expedition EcoBoost. Tows my 6000 lb boat like it is not back there. Typical 11.8mpg towing. My old V8 Expedition had far less power, and 8 to 9 mpg towing.
A 3/4 diesel would tow even better, but I like my Expy for a daily driver.
The real issue becomes payload. My Expedition has a 1319 lb payload. It is too easy to exceed that number.
So a 3/4 diesel may be in my future for my soon-to-be (April 12 offline date) 28 Serenity.
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Old 03-19-2018, 02:44 PM   #6
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I’ve had two EcoBoost and moved to a 2017 F250 6.7 diesel in late 16. I pull a 2015 28 FC and agree with comments made by MOJO. Love the diesel. Lots of travel in mountains. I experienced same issues in summer as MOJO in the mountains with EcoBoost. Don’t get me wrong, that’s a strong engine but for my towing I wanted the diesel benefits. Towing power, better braking, heavier truck not affected by 18 wheelers screaming by you and general ease and comfort of towing with it.
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Old 03-19-2018, 07:09 PM   #7
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not plotting :)

not plotting ----just thinking.

had a friend visit the other day. has a 79 or so 25' airstream weighing about 5800 lbs.
he went on a trip with his fairly new f150 with the large gas motor, not the ecoboost. he felt like it had to change down and rev up quite a bit on the hills and is now contemplating a diesel.


Quote:
Originally Posted by DKB_SATX View Post
Kevin I have to guess that most people who've had both a diesel and an Ecoboost for the same trailer have a BIG diesel pickup rather than a medium-sized diesel like your X5. I haven't towed my 26U with anything but the F150 but have driven many diesel vehicles over time. The Ecoboost has a few of the pleasant diesel characteristics like gobs of low-end torque, but is not marvelously fuel-efficient. I see 20-21 hwy most of the time (without the trailer) and that's partially because I run about 78-80 on the highway.

Towing I see more like 11 in the flatlands and less in mountainous areas, but it's perfectly happy to tow the 6500-lb 26U at the speed limit on most climbs.

What are you plotting?
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Old 03-19-2018, 08:42 PM   #8
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That is why I went to a 6.7 F250. My 2500HD with the 6.0L gas was constantly downshift and revving in the 4000rpm range. Was not comfortable with that. I have no experience with the eco boost however.

Fuel mileage is 13.5 towing a 31' Excella weighing road ready at 7300#
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Old 03-20-2018, 09:16 AM   #9
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I have a 2017 Ford 250 diesel to pull my 25’ Flying Cloud, which I am selling to get a bigger AS. I love that it has the pulling and stopping capacity that I need.
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Old 03-20-2018, 09:55 AM   #10
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I currently have a 2012 F350 diesel (is also my daily driver) and tow a 28' FC. I just test drove a 2018 150 with the ecoboost (crew cab, 6.5' bed) over the weekend and was able to tow our trailer about 60 miles with it; half freeway, have back roads. I was quite impressed with the stability and power, and was about 0.3 MPG less than my diesel. On a couple steep hills, I did notice that it didn't have quite as much power, but nothing that was a major issue. Although, the diesel does have better mileage climbing. The creature comforts and ride quality were much better though, so it has us thinking of downsizing.
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Old 03-20-2018, 11:18 AM   #11
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In the Ford world, the 3x liter eco boost lack the air volume displacement of the 6.7l diesel for engine braking in the mountains.

I tow our 2015 23D International Serenity at 6,063 pounds with my 2007 Mercedes ML320 CDI turbo diesel and can see 16.5 on the flats at 55 mpg. It downshifts to 4th gear @ 3,000 rpm to maintain 55 going up mountain. Coming back from the summer mountain camp, I downshift to 2nd and 35 mpg (the posted speed) and never touch the brakes..

The difference is the higher compression ratio in a diesel. The 6.7L Cummins in my 2012 Ram 2500 HD with it’s exhaust brake controls our 2014 31’ Classic with a rig weight oh 19,200 pounds down mountain with no issues.

One quickly learns speed is not your friend in the mountains. I even follow the yellow turn speed signs towing.
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Old 03-20-2018, 11:31 AM   #12
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Quote:
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The difference is the higher compression ratio in a diesel. The 6.7L Cummins in my 2012 Ram 2500 HD with it’s exhaust brake controls our 2014 31’ Classic with a rig weight oh 19,200 pounds down mountain with no issues.
That is a common misconception with diesels. Diesels don't inherently have engine braking, as they aren't throttled. The higher compression ratio is irrelevant to engine braking in this class of engine, because the piston works like a spring. It compresses the air in the cylinder (a lot), and then the compressed air pushes the piston back down (also a lot). There is no net work done. This is unless one has a Jake Brake or similar device and which changes the valve timing so as to exhaust the compressed air to atmosphere after the compression stroke.

Diesels in this class use exhaust braking, not engine braking. The exhaust brake is a form of choke, and it is working against that back pressure, the pumping losses, that produces retardation.
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Old 03-20-2018, 11:46 AM   #13
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Quote:
Originally Posted by silverlabs View Post
Iíve had two EcoBoost and moved to a 2017 F250 6.7 diesel in late 16. I pull a 2015 28 FC and agree with comments made by MOJO. Love the diesel. Lots of travel in mountains. I experienced same issues in summer as MOJO in the mountains with EcoBoost. Donít get me wrong, thatís a strong engine but for my towing I wanted the diesel benefits. Towing power, better braking, heavier truck not affected by 18 wheelers screaming by you and general ease and comfort of towing with it.
I agree with Silverlabs and Mojo. I put 125k+ miles on my 2012 F150 EB, and experienced same issues with my 25' AS when pulling up or coming down steep grades in summer. Moved to the F250 6.7L last June with our new 28' FC. Same experience; set cruise at 60-65mph, engine brake on auto, then sit back and relax! No more payload issues either. I also believe the longer heavier wheel base of the 3/4T is well matched for larger AS's, like the 28' for handling/control and wind conditions. MPG is about the same on the F250 4x4 as with my 4x4 F150 overall. But night and day towing.
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Old 03-20-2018, 11:47 AM   #14
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KevinKatz Friend with 16' F150 5.0 V8

The part that most bothered me about towing with the 5.0 V8 was that I didn't feel comfortable enough to let my wife drive through the hills heading to Big Bend Area. I was constantly down shifting manually to climb hills to keep the truck in what I consider the good power range. It would maintain speed but worked it's butt off doing so. If I let the truck do it's own thing, like she would have, I would find myself at 40mph climbing uphill. It's not that it won't work, but it's not ideal. I would describe myself as impatient and wanting to have available power/torque at my fingertips. That being said, I'm going to pick up a Ford F-250 6.7 and I'm sure I will be VERY HAPPY snoozing in the passenger seat
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