8mpg is getting old
Post Fiend
Joined: Aug 2010
Posts: 13,710
Likes: 5
From: Manchester, CT
id rather be paying a little extra for fuel, and i did the math, im saving 30 bucks or more everytime i fill up. yeah, a 6.0 is more expensive to maintain, but it was either keep my old truck and put 4.56s in it and get a little car, or just get a truck that gets decent mpg. so i chose option 2. i love having all the power i need, a more comfortable crew cab and room for power increases...
oh and this is just pretty awesome in its own way (mbrp system with muffler going on next week, this is temporary for fun)
More Turbo
Joined: Feb 2003
Posts: 532
Likes: 0
From: Grand Rapids, MI
Wow, that 6.0 definately moves acf6! Reading through this thread makes me feel a bit better about getting 9-10mpg all winter with my old '99 5.4L. Sure is rough driving a truck this slow that also gets abysmal milage... But its nice to know there isn't a whole lot ot stop it from going where it needs to go (plus, motorcycle season is just about here!)
Senior User
Joined: Feb 2008
Posts: 189
Likes: 2
Don't dismiss the EcoBoost too quickly. We have all three in our work fleet and all are great. However, the EB is the top dog in our fleet for MPG and towing...the only downer is no V-8 rumble.
Junior User
Joined: Jun 2012
Posts: 66
Likes: 0
Just remember this I run from FL to GA and that was my best stint not an average with no pay load and on cruse control.
Lead Driver
Joined: May 2003
Posts: 9,303
Likes: 48
From: Lyndonville, Vermont
If you are not using your truck as a work truck I feel your pain..I get what i get but it does the job well so it is what it is. To go get a loaf of bread with it is out of the question..Got a suzuki SX4 for that..
Dick
Dick
Fleet Mechanic
Joined: May 2006
Posts: 1,376
Likes: 12
From: Illinois
Super Moderator
Joined: Aug 2003
Posts: 25,479
Likes: 742
From: Isanti, MN
100% city I get 14 sometimes 15.My last trip to Tennessee hand cal I got 20.9 MPG's.That was empty with the cruise set 80% of the trip.Alot of guys don't want to believe that you can get 20 MPG's with a superduty,But it's true.Trust me,I've got alot better things to do than come on an interweb fourm and lie about MPG.
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Michael S. Palmer
Fleet Mechanic
Joined: May 2006
Posts: 1,376
Likes: 12
From: Illinois
This is an interesting thread.
I like the 6.0L engines, but they are pretty expensive to fix when things break. Diesel engines are typically about 30% more efficient than a gas engine, but at the moment in my neck of the woods diesel fuel is 18% more expensive.
So your fuel cost may go down 12% by owning a 6.0L engine, but basic maintenance costs would skyrocket. $50 for a set of fuel filters instead of $10; $70 for an oil change instead of $30, and a set of injectors costing more than 100 times what a set of spark plugs costs.
No doubt they feel more powerful and tow better, but there's no escaping the fact that they are an expensive animal to own and operate, and that's excluding any repair costs that have to be budgeted for. A single high-dollar repair would exceed the savings over the lifetime of the truck unless you spend the majority of your time towing. So if the complaint is the fuel economy the logical underlying reason is the cost to run the truck. If that's the case a diesel Super Duty shouldn't be anywhere in your thought process! You will most likely spend far more money operating that 6.0L!
I like the 6.0L engines, but they are pretty expensive to fix when things break. Diesel engines are typically about 30% more efficient than a gas engine, but at the moment in my neck of the woods diesel fuel is 18% more expensive.
So your fuel cost may go down 12% by owning a 6.0L engine, but basic maintenance costs would skyrocket. $50 for a set of fuel filters instead of $10; $70 for an oil change instead of $30, and a set of injectors costing more than 100 times what a set of spark plugs costs.
No doubt they feel more powerful and tow better, but there's no escaping the fact that they are an expensive animal to own and operate, and that's excluding any repair costs that have to be budgeted for. A single high-dollar repair would exceed the savings over the lifetime of the truck unless you spend the majority of your time towing. So if the complaint is the fuel economy the logical underlying reason is the cost to run the truck. If that's the case a diesel Super Duty shouldn't be anywhere in your thought process! You will most likely spend far more money operating that 6.0L!
Post Fiend
Joined: Aug 2010
Posts: 13,710
Likes: 5
From: Manchester, CT
I somewhat agree with you Tom.The 6.0 CAN be an expensive motor to operate,But For me it has not.Regular maintenance is all I've had to do to this truck.It's cost me nothing but oil,coolant and filter changes.No,I don't have hundreds of thousands of miles on it but in the six years I've owed it its never been back to the dealer since new.I think thats pretty good considering the whole WORLD thinks a 6.0 can't make it down the block without breaking down.Me personally,I think the risk is worth the reward.A GREAT pulling truck with GREAT mpg's for a 7200 lb truck.If I sat on the side of my bed every morning and thought about what could go wrong today weather with my truck,job,house etc I would never leave my room.Sometimes you just gotta take a risk.I have twice,And I haven't looked back since.
More Turbo
Joined: Nov 2011
Posts: 740
Likes: 92
I believe you, but your driving style would NEVER yield 8-9 MPGs on a 5.4L truck either. I've had a 6.4L, 6.7L, and my current V10. The biggest difference was between my V10 and 6.7L, and that was from 14-19 MPGs on the highway with similar driving habits, or just over a 30% gain. A stock 6.0L truck will not be as efficient as my stock 6.7L truck was.
Super Moderator
Joined: Aug 2003
Posts: 25,479
Likes: 742
From: Isanti, MN
Are you serious? The 6.0 is far more efficient than your 6.7. The only real restriction in the 6.0 is the cat...which isn't really all that restrictive. Also with the higher HP/trq output on the 6.7 means higher fuel consumption. Add to that the billions of fuel shutting emmisions sttems and you are far from efficient. I see 19-20mpg all day freeway in my 6.0 xl super cab long box.
Super Moderator
Joined: Oct 2005
Posts: 24,308
Likes: 42
From: SW Virginia
Not quite 21+ but for this distance in constant stop and go driving combined with some limited interstate, not too shabby in my book.....not for an 8,000 lb truck, anyway.
This one is from an all interstate trip up into OH last March:
Considering I had been running 70 - 75 MPH the entire trip through the hills / mountains of VA, WV, and then into OH, not too shabby either.
On average, this truck is doing about 2-3 MPG better than my '05 6.0 was when I traded it.
Super Moderator
Joined: Aug 2003
Posts: 25,479
Likes: 742
From: Isanti, MN
The first pic if from a 769 mile trip to the NC coast and back:
Not quite 21+ but for this distance in constant stop and go driving combined with some limited interstate, not too shabby in my book.....not for an 8,000 lb truck, anyway.
This one is from an all interstate trip up into OH last March:
Considering I had been running 70 - 75 MPH the entire trip through the hills / mountains of VA, WV, and then into OH, not too shabby either.
On average, this truck is doing about 2-3 MPG better than my '05 6.0 was when I traded it.
Not quite 21+ but for this distance in constant stop and go driving combined with some limited interstate, not too shabby in my book.....not for an 8,000 lb truck, anyway.
This one is from an all interstate trip up into OH last March:
Considering I had been running 70 - 75 MPH the entire trip through the hills / mountains of VA, WV, and then into OH, not too shabby either.
On average, this truck is doing about 2-3 MPG better than my '05 6.0 was when I traded it.