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Open Roads Forum  >  Tow Vehicles

 > thoughts on Ecoboost

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Bionic Man

Colorado

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Joined: 04/03/2009

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Posted: 06/06/22 09:07pm Link  |  Quote  |  Print  |  Notify Moderator

I have a 2019 Expedition MAX as a secondary tow vehicle for my 7000 pound boat.

Power has never been a concern. Actually is nothing short of impressive.

MPG solo is bette than the 6.2 Yukon XL Denali it replaced.

A couple of real complaints. It gets REALLY hot towing through the mountains in Colorado. Like 245* hot. Both engine and tranny.

It sucks fuel when towing. Coming home from the lake this weekend was 8 MPG on flat ground with no wind at 75 MPH.

Towed a very light 17’ fishing boat back from North Dakota a few weeks back. 75 mph with some wind and I was at 9 mpg. There really doesn’t seem to be a huge difference in MPG when towing regardless of weight.

And pretty much all the 3.5 right now have the recall for the cam shaft phasers. Mine sounds terrible at start up and it’s been on the parts list since September.


2012 RAM 3500 Laramie Longhorn DRW CC 4x4 Max Tow, Cummins HO, 60 gallon RDS aux fuel tank, Reese 18k Elite hitch
2003 Dodge Ram 3500 QC SB 4x4 Cummins HO NV5600 with Smarty JR, Jacobs EB (sold)
2002 Gulf Stream Sea Hawk 29FRB with Honda EV6010

Turtle n Peeps

California

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Joined: 06/23/2008

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Posted: 06/07/22 09:24am Link  |  Quote  |  Print  |  Notify Moderator

Here is a great video on the EcoBoost.

The guy does a great job of talking about the good and the problems with this engine.

When this guy talks about this being a high performance engine he is a 100% correct. This engine needs to be thought of as pretty much a race engine. As mentioned, race engines need impeccable maintenance.

Another thing about this engine and engines like this. They don't have much duty cycle. That's why class 8 diesels have a big CID displacement in them. We can make big power with a little engine but when the weather turns hot and the mountains get steep you need that big mass to displace the heat the engine produces.

In short, if you are going to pound on this engine day in and day out up steep mountains in hot weather this engine is not for you IMHO.

If you are a weekend warrior and pull a trailer now and then in easy or moderate conditions this might be a great engine for you.


~ Too many freaks & not enough circuses ~


"Life is not tried ~ it is merely survived ~ if you're standing
outside the fire"

"The best way to get a bad law repealed is to enforce it strictly."- Abraham Lincoln


Groover

Pulaski, TN

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Joined: 10/17/2007

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Posted: 06/07/22 11:59am Link  |  Quote  |  Print  |  Notify Moderator

Bionic Man wrote:

I have a 2019 Expedition MAX as a secondary tow vehicle for my 7000 pound boat.

Towed a very light 17’ fishing boat back from North Dakota a few weeks back. 75 mph with some wind and I was at 9 mpg. There really doesn’t seem to be a huge difference in MPG when towing regardless of weight.


That is what I have been telling people for a long time, weight only impacts fuel economy through rolling resistance and lost energy when braking. Rolling resistance is tiny compared with air drag at highway speeds. Braking losses due to increased weight are only important if you are using the brakes, which rarely happens on the highway. On most highways air drag is by far the dominant factor in the fuel economy equation. Fuel consumption rate in gallons/hr due to air drag goes up with the cube of your airspeed. That is basic physics.

Stop and go traffic is an entirely different story.

Groover

Pulaski, TN

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Posted: 06/07/22 12:19pm Link  |  Quote  |  Print  |  Notify Moderator

Turtle n Peeps wrote:

Here is a great video on the EcoBoost.

The guy does a great job of talking about the good and the problems with this engine.

When this guy talks about this being a high performance engine he is a 100% correct. This engine needs to be thought of as pretty much a race engine. As mentioned, race engines need impeccable maintenance.

Another thing about this engine and engines like this. They don't have much duty cycle. That's why class 8 diesels have a big CID displacement in them. We can make big power with a little engine but when the weather turns hot and the mountains get steep you need that big mass to displace the heat the engine produces.

In short, if you are going to pound on this engine day in and day out up steep mountains in hot weather this engine is not for you IMHO.

If you are a weekend warrior and pull a trailer now and then in easy or moderate conditions this might be a great engine for you.


The 3.5 EcoBoost came out 11 years ago and there are a bunch of them on the road now but I rarely hear first hand complaints about its reliability. Timing chain stretch on 2014 and earlier seems to be a problem but I don't hear much about that anymore. I just had to have the timing chain replaced for the first time on a 2013 model with 144,000 miles on it and quite a few of those miles were pulling a loaded three horse trailer.

Unfortunately, the mechanic my daughter took it to for the timing chains turned out to be incompetent The truck still doesn't run right after 3 weeks of work. The guy even destroyed the running boards while he had the truck.

Yesterday he told us that it was in perfect running order and to take it home but it immediately started throwing a variety of error codes and the turbos don't work. We took it away from him and will take it somewhere else to try to get it straightened out. I am over 60 and that is by far the worst performance I have ever seen by a mechanic.

2112

Texas

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Joined: 07/16/2011

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Posted: 06/07/22 02:02pm Link  |  Quote  |  Print  |  Notify Moderator

I drive a 2011 3.5L ecoboost with 164K miles on it without any problems YET. It tows my 9400lb FW great on mostly flatlands.

Towing anything at 75mph will render you horrible gas mileage


2011 Ford F-150 EcoBoost SuperCab Max Tow, 2084# Payload, 11,300# Tow,
Timbrens, PullRite SuperGlide 2700 15K
2013 KZ Durango 2857


BenK

SF BayArea

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Joined: 04/18/2002

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Posted: 06/07/22 03:10pm Link  |  Quote  |  Print  |  Notify Moderator

Thanks Turtle...GREAT video !

Only have one issue and is with his mix up of gas vs diesel describing the fuel PSI. IMHO, most won't pick that one up, but that is the way of it

Folks who argue dino vs synthetic engine oil won't get this one either. Yup, dino has come a long ways closing the gap with synthetic, but so has synthetic been improving at the same time. That additional headroom on specifications might make the difference down the road. Especially when it gets driven hard using that big block volumes of air/fuel in a tiny combustion chamber.

That then gets into rejection thermal management of all of those BTU's and is with surface area between a small displacement vs larger displacement.

That can be managed with higher flow rates of coolant, which up to a point tops out, and then the efficiency of each square inch matters. Play with temp differential to have higher transfer rates, to swirl, to better plenums both in & out (multi in & out paths of virgin coolant helps and is the why they had reverse coolant flow to the heads a few years)

Lubrication, and why most of the higher priced oils now claim some sort of molybdenum sulfide these days. Am still adding my own last quart, which has been mixed in a blender with MolyB powder. Have some Tungsten disulfide powder, but limited 'cuz the buddy's firm bellied up and he dropped off the face of the Internet

That added margin of better lube (the lowest coefficient of friction for additives...both MolyB and Tungsten) makes a huge difference in anything metal to metal. Like the chain-stretch wear from extreme pressure when the turbo's kick in.

Cool video and like Dustin Golley. Smart guy showing his knowledge of the engineering & technology involved




Turtle n Peeps wrote:

Here is a great video on the EcoBoost.

The guy does a great job of talking about the good and the problems with this engine.

When this guy talks about this being a high performance engine he is a 100% correct. This engine needs to be thought of as pretty much a race engine. As mentioned, race engines need impeccable maintenance.

Another thing about this engine and engines like this. They don't have much duty cycle. That's why class 8 diesels have a big CID displacement in them. We can make big power with a little engine but when the weather turns hot and the mountains get steep you need that big mass to displace the heat the engine produces.

In short, if you are going to pound on this engine day in and day out up steep mountains in hot weather this engine is not for you IMHO.

If you are a weekend warrior and pull a trailer now and then in easy or moderate conditions this might be a great engine for you.



-Ben Picture of my rig
1996 GMC SLT Suburban 3/4 ton K3500/7.4L/4:1/+150Kmiles orig owner...
1980 Chevy Silverado C10/long bed/"BUILT" 5.7L/3:73/1 ton helper springs/+329Kmiles, bought it from dad...
1998 Mazda B2500 (1/2 ton) pickup, 2nd owner...
Praise Dyno Brake equiped and all have "nose bleed" braking!
Previous trucks/offroaders: 40's Jeep restored in mid 60's / 69 DuneBuggy (approx +1K lb: VW pan/200hpCorvair: eng, cam, dual carb'w velocity stacks'n 18" runners, 4spd transaxle) made myself from ground up / 1970 Toyota FJ40 / 1973 K5 Blazer (2dr Tahoe, 1 ton axles front/rear, +255K miles when sold it)...
Sold the boat (looking for another): Trophy with twin 150's...
51 cylinders in household, what's yours?...

BarabooBob

Baraboo, WI

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Joined: 12/28/2015

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Good Sam RV Club Member

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Posted: 06/07/22 05:14pm Link  |  Quote  |  Print  |  Notify Moderator

BionicMan-try do2wnshifting the engine yourself. I have towed over almost every major pass in Colorado, Wyoming, and Montana. By downshifting, I have NEVER had my engine and tranny anywhere near 245 degrees. I drive at reasonable speeds and shift when by tranny digital temp meter starts getting near 205.


Bob & Dawn Married 32 years
2017 Viking 17RD
2011 Ford F150 3.5L Ecoboost 420 lb/ft
Retired


Adam R

ut

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Joined: 02/12/2014

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Posted: 06/07/22 09:47pm Link  |  Quote  |  Print  |  Notify Moderator

https://www.youtube.com/watch?v=RZlysdE6pvw

The torture test Ford put this 2011 through was pretty impressive. Towing 11,000+ lbs around a NASCAR track at full throttle for 24 hours shows a pretty impressive duty cycle IMHO.

I'm sure the engine has just gotten better and better over the past decade.

Adam

Bionic Man

Colorado

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Joined: 04/03/2009

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Posted: 06/08/22 08:26am Link  |  Quote  |  Print  |  Notify Moderator

2112 wrote:

I drive a 2011 3.5L ecoboost with 164K miles on it without any problems YET. It tows my 9400lb FW great on mostly flatlands.

Towing anything at 75mph will render you horrible gas mileage


I’ve towed with a 3.0 diesel, a couple of 5.7 Hemi, a 318 5.2, 360 5.9, a 5.9 CTD, a 6.2 GM and a 6.7 CTD. None of them returned that poor of fuel economy towing a light weight boat.

FishOnOne

The Great State of Texas

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Joined: 02/12/2011

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Online
Posted: 06/08/22 08:03pm Link  |  Quote  |  Print  |  Notify Moderator

Turtle n Peeps wrote:

Here is a great video on the EcoBoost.

The guy does a great job of talking about the good and the problems with this engine.

When this guy talks about this being a high performance engine he is a 100% correct. This engine needs to be thought of as pretty much a race engine. As mentioned, race engines need impeccable maintenance.

Another thing about this engine and engines like this. They don't have much duty cycle. That's why class 8 diesels have a big CID displacement in them. We can make big power with a little engine but when the weather turns hot and the mountains get steep you need that big mass to displace the heat the engine produces.

In short, if you are going to pound on this engine day in and day out up steep mountains in hot weather this engine is not for you IMHO.

If you are a weekend warrior and pull a trailer now and then in easy or moderate conditions this might be a great engine for you.


Just a fyi this video is on a first gen EB engine. The second gen EB engines have 2 timing belts like the old Triton V8 engines.


'12 Ford Super Duty FX4 ELD CC 6.7 PSD 400HP 800ft/lbs
"200k Mile Club"
'16 Sprinter 319MKS "Wide Body"


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