You're 2009 also weighs a lot more.

 

That seems like a lot of DEF to me,

The 6.7 is supposed to come out ahead because of DEF, as in the money you spend on DEF is far less than the diesel fuel it would burn otherwise.

 

True, but not enough that it would make that much of a difference. Granted it also makes more power too. The regens knock off about 1 or 2 mpg alone. If it wasn't for all the EPA requirements todays engines would have been more efficient than the old 7.3.

 

The old 7.3's also sat lower, and I think were smaller in general.

I remember my old 7.3 IDI getting awesome mileage, but it was 2 wheel drive, and a lot smaller than my 08 f350 CC

 

just got it so not sure what the actual real life amount will be BUT according to the guys in the company that have had them for awhile now a tank of it lasts approx 5000 miles and tank holds 27 gallons. we drive 913 miles a day.
When I do the math it works out to 185 miles to a gal of DEF according to the other trucks, then doing the math from there into the 913 miles equals 4.94gal/day.

Also remember that is a 13.1L engine, almost double the size of the one ford is using.

As to savings? Not sure how that is going to work considering what it actaully does. and according to the other drivers in teh company that have the new 2011 trucks they aren't saving any fuel yet (my fuel economy is right on average with them in the older 2007 truck I was driving)

Edit to add: And everyone expects usage to be around 2% of fuel. that works out to around 3 gallons a day. IDK guess we will see.

 

We'll have to break out the grills and have a cookout.

 

Most of the 6.7L trucks have seen around 1,000 MPGs on DEF. My truck has consumed 7.5 gallons of DEF in 10,400 miles. Hardly an expensive operating cost.

 

I can't believe how much has been discussed in this thread without touching on use.

Most of the arguments are "who can get to the top of the hill the fastest", or "my v10 can handle the same trailer."
For an average user, ANY gas motor will work, as well as ANY diesel.

For moderate towing, the v10 is fine, as is the powerstroke.

Where the diesel starts to shine is when it gets used for what it was designed for - heavy usage. It can pull heavy loads elegantly, without hitting super high RPM's all the time. It will stay in gear better, and it will hum along all day long and do it day in and day out while providing better mileage. Even the newer diesels that I personally have been around, the only problems are usually the ones being used for grocery getters.

There are plenty of diesel trucks that are used for constant pulling, and I mean pulling there, and bringing another load back. The parts are made for that kind of work. A diesel will pull a full load running 1800-2500 RPM's all day long, how long do you think a gas motor will last running 3500+ RPM's to catch up? Guaranteed not as long as the diesel, ever.

To say you can make up for the low end torque with RPM's is fine, but thats just it- the diesel doesn't have to "make up for" torque, it has it, right at the range where it's nice to drive. You could put a 800HP honda civic 4 banger in there and make up for torque by hitting 8000 RPM's too.

The v10 is great, and an awesome option for a lot of people. In fact I'd go so far as to say a lot of people think they need a diesel, or they want one, when they would probably been quite happy with a v10.

At the end of the day, though, even comparing an old idi 7.3 to the v10, diesels are meant to work hard, and they do a good job of it. Theres a reason heavy equipment and lots of commercial products use diesel engines. It goes further than power ratings or sticker price.... A diesel engine will do more work for you for less.

 

I wonder if the semi's are running less EGR and more DEF ?

 

at 1000mpg you should have used a little over 10 gallons by your figures. So read following.

Not sure of what fuel economy the 6.7 is getting but lets use the 10,000 figure at 19mpg on average. using the 2% number I posted earlier that equals as follows. in 10k miles you burn 526 gallons times 2% equals 10.52 gallons of DEF which isn't too far off of the 1000mpg of DEF. Fleet average of our trucks is 6.4mpg fuel. average we drive our truk around 228,000 miles a year. at 6.4 we will burn 35664 gallons of fuel in a year. Now take that by the 2% and it is 713 gallons of def. (current truck is averaging 6.6 but the 6.4 is fleet average right now)

 

I wasn't talking about my truck getting 1,000 MPGs; I was simply referring to the consensus of the 6.7L owners that I've read down in the 6.7L forum. Many of them tow more than I do.

My truck took exactly 7.5 gallons, but I also average better fuel economy than most of them because of my driving conditions. The direct relationship with fuel consumption would explain that!

 

One of the reasons for the DEF, I was told, was that the new trucks will run less EGR, making them more fuel efficient, and powerful, while eliminating even more of the soot out of the exhaust.

 

I'd rip all that crap out if my truck had it. I don't like extra useless parts. My 7.3 had an extra useless part, I pulled it out first thing!

 

What was that for?

 

Its a heater that never gets used.