I am one of the higher numbered crowd. Across the board I have been getting 15-16 mpgs averages with a high of 21.4 mpgs with a mix of traffic. This fuel we have in the winter has higher %s of butane right now thus being a dirtier burning fuel and an easier starting fuel. This is why everyone notices a drop in mileage in the winter or at least in the northern regions. Heres a good article explaining the reasonings http://auto.howstuffworks.com/fuel-e...mmer-fuel1.htm

 

I get 11mpg average in my Durango, with less power that what you have.

 

welcome to the club, if I do some highway and city i see about 12.5mpg and all city 8-9mpg

 

One of the main factors why the 3.7 and 4.7 are toast. My 07 4.7HO is avg 14.8 mpg and its killing me. Hell a friendf of mine with a Silverado 4.8 305 hp is getting avg 17.5. Now thats a full size with a real back seats and a 6.5 box. Others with the new Heimis are doing better then any 4.7. If I could get a fair price for this POS I'd lose it in a heartbeat.

 

If he is stating 17.5 in town, I am throwing down the B.S. flag. He may be using the "well, I had a quarter tank left on the gas gauge" measuring method, which is not anywhere near accurate. Lots of people try that.

What year is that Silverado? In my 2010, I can get 17-17.5 if I take it easy during the in-town portion of my work commute (75% city, 25% highway). However, the 2008+ 4.7Ls did get a little better MPGs than the older models.

Comparing your 6 year old truck to a brand new HEMI is like comparing a four year old computer to a brand new gaming rig, of course the new unit is going to be better and faster! The difference is yours cost a lot less, especially if you have it paid off. Even if you don't have it paid off, your payments are far less than what you'd pay for a newer Ram. The payment difference would be far more than what 2 MPG costs you in extra fuel.

 

13! I am at 11.2-4 mpg
I havent gotten a oil change in year - and i just use regular gasoline.
recently got my manifold done, befor that it was in the 10's.
dont got time to read over this thread now but i will hopefully i can learn something to conserve some gas- like maybe purchase some new exhaust systems.!
CALIX

 

I highly recommend you get your oil changed. You are far overdue.

 

I used a 1/4 tank in city and drove to Phoenix and back pretty much all highway and got 18.2. That was right before the oil change.


If it doesn't link you can see the fill up here:
http://www.fuelly.com/driver/joeydmg/dakota