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I have a 2004 Lariat Crew Cab Diesel with 2500 miles. In all kinds of driving I have racked up 3000 miles and the fuel economy guage tells me I am averaging 12.8 mpg. Is this what I should expect or does it improve slightly as the miles get added on? I have the 4.10 rear end and automatic tranny.
The 12.8 mpg is actually from when the truck was brand new. Since I cant figure out how to re-set the guage the mileage is hwy pulling a trailer for about 2000 miles and 1000 miles of around town. Speed while trailering was about 65 and around town is crawling.
I am not expecting Honda Civic mileage, and this 12.8 mpg is certainly better than my old 1995 Dodge with the 360 engine (8mpg). So I am not disappointed in 12.8, but was wondering what others are getting.
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You should experience a bit better mileage in the miles to come as the 6.0 breaks in. But as 77Highboy points out, the 4.10:1 gears are going to raise your rpm on the freeway. As a comparison, my 6.0 with just a thousand more miles on it, with 3.73:1 gears and the 6spd standard transmision, is averaging 17mpg in town/mix county roads with my best of 19.5mpg on the freeway averaging 70mph. Last time I towed a 5000 pound trailer over the pass, it got 15mpg.
Many people with the computer/runtime display for mileage call it a LieOmeter. Best to do the math when wanting good figures for mileage. I keep a log book for every fill up and maintenance practice on the truck. I just keep it in the sorry excuse for a console, and am religious at keeping it up to date.
I dont know how you can accurately calculate your mileage when there is such a variance from one pump to another. I have a friend who also has a 6.0 SD that says that he added an additional 5 gallons once to his tank after the pump shut off. Personally, I am having difficulty in getting consistant calculations. Anyone have a more consistant method?
Most of the time I drive until the low fuel light comes on. I know then that I should be able to get 35+- gallons in. I consistently pump until it's full every time. And over time if I've got one trip/calculation that's a bit off, high or low, from the other numbers then I throw that value out. That's a realistic approach to calculating the most consistent average of "average fuel consumption" per tank. With that as a base, I trust that the mileage reported by my odometer, derived from drivetrain revolutions through stock sized tires, is correct to within .1%. (Close enough for Government work!) When I calculate, I round the final value to the nearest whole number. High or low. Not rocket science, just calculating fuel economy.
Remember, you can skew statistics, but the numbers don't lie.
If the fuel foams while filling. I pump slower. If it only foams at one pump/service station. I use a different pump/service station from then on. It's amazing what little thing it takes to get me to not patron a particular business.
Thanks guys for the input. I mentioned that during 2000 of the 3500 miles or so I was pulling a trailer. What I didnt mention was that it was a four horse gooseneck. Estimated weight with horses and stuff was probably 12,000+ pounds.
I love this truck. I do have another question though. How long does it take to get used to the TURNING RADIUS? Or lack there of. Is it because it is a dually or because it is three feet longer than my Dodge? Wow, I dont know how many times I have tried a U turn and it turns into a three point turn with people giving me the evil eye.
I do know when I travel on the two lane country roads around here people give me a wide berth when they see me approaching.