I get around 15-16 daily running around. I have managed better than 21 on the highway, however this was driving from where I live in NY to Woodsville NH. On "my" truck I have to keep it at 65mph, if I run faster my mpg does drop. This is far from a straight flat trip, there are some hills along the way. I would love to make the I-80 run from Omaha to Cheyenne just to see what I could get. I am sure that with the older truck-older strategy, race tuning-locked converter and the right driving style I could get 24mpg.....But would I be having fun?

 

i get 16.5 highway... at 85mph

 

I wish there was somewhere around here that I could run at a steady 85mph long enough to be able to figure my mpg....just to see.

 

i run 83-90... never slower than 83 unless a work zone

 

Insert face into palm...

My apologies here, I'm confusing members again (long day Friday eh?)

This post:
I was thinking papachuck, not Bob, thus my comment about the race tune use.

I'm actually going to agree with this, never seen one get 24mpg EVER. I know Eric from Innovative was able to get a 2x4 truck into the 22-24mpg range, this truck also had larger injectors, a larger turbo, and this mileage was recorded running 50-55mph on flat ground between two shops. He said if you got into it at all, it dropped dramatically. I can't see a stock injectored truck doing this. Especially on an Edge, but I've been wrong before.

This is the guy who I was thinking, when I was posting about Bob (not that I don't believe you Bob, but it's one of those things it's hard to believe without seeing).

I hear that. I found one place near my hometown where I could do a 100mph for a short time. I wanted to see what RPM's and EGT's were at 100 steady.


If you're getting 24mpg out of any 6.0, hold on to it with dear life and don't let a dealer reflash that thing for anything.

 

I think that with the tanks on our trucks being such a pain to get full, alot of people have a hard time figuring their mpg. I was with a guy who filled his tank, said it wouldnt hold more and it was up in the neck. I shook his truck and fiddled with it and got 3 more gallons in. Over a 100 mile run 3 gallons would make a huge difference and it could be either way depending on which end of the trip you put the biggest effort in filling the tank. I honestly believe 20-21mpg is possible for most trucks depending on how hard you try, tuning and terrain ect. 13-15 is probably more reasonable for most people. Would I call BS on the 24mpg claim? no I wouldnt, but I would say repeat it a few times and be very sure the tank is full every time. Just to be sure of the results.

 

I have used my totally stock (Except for K&N air system) 06 6.0 for both commercial hauling and as a DD and I watch my mpgs very closely, especially when I was figuring the cost/mile to run the truck for business.

I do fill to the very top of the neck, shake the truck and fill until most of the time the cap pushes a little fuel out. The best I can get is 17.5 mpg if I run right at 2000 RPM (OEM Tach). The ONLY time I ever did any better was in Maine one day when I was driving a two lane and had time to kill and I hit almost 20 mpg but that was the ONLY time. The worst the truck ever did was going from Phoenix to Salt Lake grossing 26,000+ pulling a 28' goose neck in FWD during a snow storm and that was just over 9 mpg

Papachuck you don't want to make the I-80 run from Omaha to Cheyenne you will be fighting a head wind you want to go from Cheyenne to Omaha and catch the tail wind

 

I was just thinking long, straight and flat with few stops but a tailwind couldnt hurt.

 

Just get west of the Mississippi - I90 in SD & I70 from St Louis will both have less traffic then I80 which is a MAJOR 18 wheeler route. Came across I90 in SD one morning and went 130 miles before I even saw another vehicle. Just bring a piece of rope, set the cruise to the speed you want then use the rope to tie the steering wheel then take a nap or read a good book

 

10.6 mpg that last tank...

---that includes *all honesty
-going 118mph
-going 100mph 5+ times
-doing 15 WOT's
-driving around town
-being stuck in mud, reving the F*%k outa it trying to get out
-leaving it idle for a total of 5 hours to keep my girlfriend warm