LOL
I'm only about 400-450 at best..

 

Same here. I fill up right at 400 miles with 30 gallons. I don't get it. But hey, my mileage has been consistant since truck was new

 

Wow thats insane mileage. Traveling to work using county roads staying under 60mph while be pretty gentle on the loud pedal only netted me 550 miles as my best.

No tank mods or engine mods.

 

Getting 730 some miles out of a tank, that must be coasting down hill for 400 of that. I think I need to raise the BS flag on that one.

 

Well i am glad I am not the only one that is stuck at the 400-450 mark! We must just have a heavy right foot!!

 

Just took a 680 mile trip, crusing at 70 (right on 2000rpms), best I could do was 15.6mpg. Getting 480ish a tank.

 

not unheard of, you got less weight to lug around. is this city or highway predominantly? I have noticed that the 6sp are better in the city and the auto is better on the highway. you may also look into the fact that your Odometer may be out of whack 500-600 is more realistic cause i've gotten 650 on the highway....once.

 

Winnemucca NV to Coeur D'Alene ID by way of Boise ID, Pedelton OR, Tri-Cities WA, and Spokane WA for a total of 697 miles. Filled up in Coeur D'Alene and it took 30.0 gallons. That is 23.3 mpg and no BS. I probably could have gone another hundred miles since the tank was topped off both times. That if of course rolling empty and going easy on the right hand pedal, but doing right around the speed limit the whole way. Truck is completely stock except for what I have in my sig, and I think that the hard tonneau cover helps my mileage.

 

My last long trip without refueling was 808.4 miles and used 36.34 gallons which was 22.24 MPG even with a 37" tires.

 

you guys are high!!!!your probably the same guys that tell all the ladies u got 10 inches!!!! i have never ever, ever, on any cummins i have ever owned got 22+mpgs!!!! EVER!!!!....stop calling your overhead "hand calced"!!!!!!
my 06 has a bed cover, and smarty SR (which really did give a legit 1 to 1.5mpg gain) and missing muff....and still have never seen over 18mpg... i usually get 15-16....if ur gonna lie, go do it on facebook or myspace!!!

 

i dont even think my girls 4cyl taco gets 23mpg.....is your speedo calibrated correctly....

 

700+ does seem high but who knows. These debates always come up.

On my 04 305/555 I just made a couple more trips and on the REVO sw3 I got right at 19.8mpg. This is with stock tires and 4.10 gears averaging 65-70 mph. I think that is great for having 4.10's. I have gotten almost 22 on some very long trips running 55-60. That is hand calculated with fuel to the top of the filler tube.
I would be more than happy to prove it to anyone. deal is when I fill up and meet those numbers, you hand over the cash for the fuel. lol

 

I don't think so, i have gotten that kind of mileage out of mine plenty of times, i believe him.

 

Negative! Don’t do drugs ever! I have a Top Secret clearance from the US government and I get randomly tested for drugs all the time and have passed the past 22 years. Actually I tell the girls its 12 inches and the girth of a tuna can. It all depends on how you drive. I slower than grandma and never past 60 MPH and always on cruise. I coast on neutral on a down hill and to a stop sign . All this with my Smarty set on even SW no timing. I tell you what; I will put my money where my mouth is. Since you are just south of me if you ever come up north on your way to Reno or Tahoe, stop by Sacramento and we will dive my truck for say 100 miles. If I use more than 4.7 gallons I owe you $1K and if I use less you owe me $1K. I will set my Smarty with timing, inflate all my tires to 65 PSI and WILL take your money for sure. I’m feeling rich already. Put up or shut up and don’t accuse people of lying. No, the overhead “lie-o-meter” is just there for decoration purposes and I don’t use it. My spedo is dead on and been calibrated according to my GPS and police radar.

 

That's me, some guys say "I keep it under 2k rpm" Man I hit 3k just leavin my driveway!! Heavy footed, I guess that's me.