Wow....

 

What mods has he done? How fast was he going and on what terrain? Tailwind? With the right mods and smart driving, 25 or 30 mpg should be no problem on level highway. If he's pulling a bunch of weight or going up and down hills alot that'll suffer, as it will in stop and go driving, but you shouldn't dismiss it just because you don’t get the same milage on your way to the mall during rush hour.

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Sorry about the trolls comment, not a great day, I overreacted.

 

no malls close enough for me to go to, so wouldn't know about mpg during those trips.

Do you own/drive a 6.7CTD on a regular basis? 25-30 mpg with a 4x4 dually with this motor is flat out a lie. (unless you do a lot of downhill coasting in neutral with the motor off.)

No problem on a level highway? First off, the front axle is constantly dragging, as there are no hub lockouts. Plus the 2 extra tires vs a SRW truck...etc.

However, I haven't considered the possibility that the OP may have figured out a way to make his 6.7 a hybrid.... For some reason I highly doubt that.....




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You might be surprised by the age of some members on these diesel forums....Not everyone bought a diesel to "rice" around.....

 

Age has nothing to do with it.

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Again, has he modified his rig? Freespin hub kits are available, highway tires at max pressure will add less rolling resistance than A/Ts or mud tires at lower pressure, aerodynamics can be improved, computer and mechanical tunes can improve efficiency. I'm not saying his numbers are accurate, but unless he posted more info while I'm writing this, we don’t know his methods. An " argh " emoticon doesn't further the conversation.

 

Again, do you own a 6.7? Do you drive on on a regular basis?

... (hoping this emoticon will not further this ridiculous conversation....)

 

I have a 6.7 and 24v. 25 mpg out a Cummins 4x4 Dually is far from reality. You can do free spin hub kits, electric fans, and any other trick to a one ton dually and it wont get 25mpg. Anyone that has been around diesels long enough knows that 25mpg is a reach for a 2wd let alone a 4x4 dually.

 

Hey boilerdonkey, sorry for hijacking your thread with our pissing match. As was stated earlier in the conversation, the overhead display fuel economy readout is generally rather optimistic, especially on these trucks, so you'll have to divide the miles driven by the gallons consumed to get an accurate fuel economy figure. Diesel tends to form a foam when dispensed into the tank, so you'll have to give it time to settle and top it off slowly to get the tank to a consistent level for accurate calculations.

 

Huh, guess he dosen't

 

:w2 :

 

Nope I don’t. My gas burner gets decent fuel economy empty, everybody says diesels are more efficient, I guess they lie.