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Comments
I've always gotten better mileage than EPA estimates, regardless of what vehicle I'm driving, so I guess I can chalk it up to driving habits.
Still, the average over the last 20 tanks is 17.56 MPG. This is mixed driving, 70% around town, 20% open country roads, 10% expressway. A recent trip with a 650 lb. ATV and 400 lbs. of gear yielded 22.31 highway (60 MPH).
Regards,
Dusty
At least you've only dropped about 0.2 MPG. When I put on new tires, I dropped about 1.0 MPG. Out of curiosity, I looked at some of the tire ratings in Consumer Distorts. Most Truck/SUV type tires tended to have poor ratings for rolling resistance. The tires I purchased, were rated "poor" for rolling resistance. Oh well. Maybe I should have looked there before buying.
Well, that's a .2 drop in average over the fillups since I put the tires on it, compared to the same time period the year before. Unfortunately, that is possibly inaccurate since my driving between the two periods has not been the same, i.e. not the same highway versus around town versus country.
Oddly, the Dak turned in it's best all city tank at 19.13 just a few weeks ago. That was before we got the real hot weather. Since then the air conditioning has been on almost constantly (I melt easily!). Nothing kills gas mileage on my Dak better than running the air.
Bests,
Dusty
1. My right foot.
2. The temperature.
3. The altitude.
The computer tuner makes a noticeable improvement on acceleration, but can't tell a difference otherwise. I can't believe that a 0.1 mpg difference is a measure of anything, since you can't fill the tank to exactly the same level one fill up to the next.
When is is very hot or very cold, the mileage goes down.
When the altitude gets higher, the mileage goes up, and noticeably. I'm sure that is a function of the computerized F.I. system, and common on most autos.
Also, this thing is an aerodynamic shoe box with a brick on top.
None of the modifications I have made have had any impact on mpg. When using the K&N, oil does get sucked into the engine, which you can tell if you ever pull the air box of the throttle body. Now I am back to stock, except for the bed cover. The 4.7 is so well designed, bolt on stuff just isn't going to help anything, especially gas mileage. Put your money into weight reduction if you really want an impact.
Also, I used to have a '97 Dakota, which was almost identical, except it had the 3.9. The gas mileage was no better than the 4.7.
Just my 2 cents.Thanks.
I agree. Not much is going to have an effect on the mileage.
I have just purchased an 06 Quad Cab 4x4 with the 4.7. Just hit 1000 miles. 16.9 mpg is the average so far.
Thanks
Trace
I used to get the window-sticker MPG of about 18... but when I replaced the fluids with REDLINE oil, the reduction of oil-churn and friction gave me an instant 4-5MPG increase. (Xmission, Xfercase and both differentials) The other bonus is that I may NEVER have to change these fluids again and the manual xmission shifts better than ever.
Trace
I bought my 04 Quad 4/7 4x4 10/03, right before winter with 8 miles on the clock. I got mid 11s to mid 12s for the first 20 thousand miles. Then it went to an average of mid 14s in normal mixed driving. Sometimes 14.9 in normal driving if I'm gentle but 15 mpg in every day driving continues to elude me. On a couple of road trips I managed high 18s but that was my very best ever with the truck broken in, cruise set at 55 but lots of steep brades. Maybe if I had been on flat roads I could have managed 19 or 20 but for my truck touching 20 mpg is an absolute best case scenario if I drive like my grandma, downhill both ways, in 75 degree weather. Mine has 3.55 rear.
In general I'd say if you're buying a V8 Dak you might get high teens or 20 mpg on a regular basis if it's a 2wd reg cab with few options. For the heavier extended/crew cab 4x4s, expect 14 mpg all around including highway and if you get anything better consider it a bonus. Most 4x4 non reg cab Daks don't really do alot better than HEmi Rams.
My calculated mileage since 1 June 2006:
17.66
16.22
19.05
17.83
18.26
18.61
16.80
18.65
16.63
17.76
19.68
18.25
17.13
17.16
17.95
17.79
19.40
18.78
Average since 1 June 2006 = 16.923
Average to date = 16.84
All other things being equal, fuel consumption is highly dependent on driving style. While some claim "dismal" mileage, my experience and that of others is the Dakota will turn in EPA ratings plus when driven accordingly.
I normally drive sedately. Those tanks in the 16s represented use of the air conditioning. My driving is around town and country roads with about twenty-percent expressway driving. I live 3.4 miles from work. Since July all of my lubricants have been non-synthetic. Since 21 August the differential fluid has been Mopar 85-140W synthetic. My last plug, air filter, and PCV valve change was at 51,560 miles.
I have installed one size larger tire. All mileage recordings include an odometer correction of three-percent.
My top mileage ever recorded was 22.81 on interstate summer time highway driving at 65 MPH, loaded with approximately 1000 lbs. (ATV, passenger, equipment).
In my experience the superbly built 4.7 motor does not fully break in until 35,000 miles plus, some even more. My year-over-year average indicates that mine is still breaking in, albeit slowed down in the last year.
Regards,
My 07 already gets better mpg than the 02 4x4 v8 dakota I traded in.
Ron
Before selecting th RedLine "MTL" prodct, I eMailed dave@redlineoil.com asking which of their products should be used in the NV3500 tranny.
Incase others wish to know, here are the RedLine lubes I used.
NV3500 xmission ==> MTL
NV231 Xfer case ==> D4ATF
9.25" Rear Diff. with LSD ==> 75W90
C205F front Diff. ==> 75W90
Power Steering System ==>"Power Steering Fluid"
My only connection to Red Line lubes is because I researched many various synthetic lubes and Red Line stands out becuase of their use of ester base stocks. This class of syntetic oil is expensive, but I feel worth the extra cost.
For example, When the outside temparture was lower than -10F, it took somone with Popeye arms to steer it. This was because the "Dodge" powersteering fluid was too thick at those low tempartures. After trying several different kinds of PS fluids, ONLY the RedLine PS fluid worked at those low tempartures. A simular improvement was noted when shifting the NV3500 xmission.
I can tell you that my 2000 Dak with 4.7L SemiHemi and manual xmission gets about 200 miles at the HALF tank mark and can touch 300 miles per tank if I want to push it. (shape of gastank makes second half of tank go faster)
I can tell you that 30,000 miles is still below the point where my engine "loosened up". Perhaps as you continue to drive the MPG will increase. (dont forget the all-important bursts of full-throttle accelleration to help seal the rings.)
In short- Adding a cap or a tonno cover gives better MPG due to the smoother airflow over the rear of the truck.
kcram - Pickups Host
14 around town, only 6 miles to work so it rarely gets fully warm. 19-21 highway at 70. Worst milage 6, in deep sand at the beach. Guess what if you drive enough on the beach with RTS raised outline white letters, you get partial whitewalls, or at least graywalls.
I'm having the dreaded sway bar squall. Any ideas on what to lube them with? Since I beach drive a lot, I want a dry lube if possible. Does Dodge make a retrifit kit to the later sqeak resistant bushings?
BTW, I spend about an hour with a leaf blower and a hose sprayer getting sand and salt out of the frame and undercarriage.
Any insite would be much appreciated.
Thanks!
Best regards,
Dusty
Mick
So far with the warmer weather in April the average is 17.73 with the last two tanks over 18. The total to-date average for 66 months is 16.89 lifetime. I now have 98136 miles on the vehicle.
Dusty
lowest mileage was before it broke in fully at about 8k. overall was about 12-13 in town, 18 hwy. after break-in i have regularly gotten 15+ in town and 19-20 hwy. lowest when pulling 5k# trailer in oilfield (don't have figures, but LOW) and highest in mountains of colo. with large suzuki 1200 madura or yamaha xs11 midnight special in bed - 550# or so - averaged 'well over' 20 mpg (i calculated couple of tanks at 22+ mpg back in '01 in colo. mtns. on 85 octane gas!!!). mileage went down when i changed the orig. plugs with splitfires (significantly) at about 110k. i put the old ones back in, mpg went back up. replaced them at just under 150k with oem from dodge dealer. mpg is still good, but i don't drive it much now. will check back here with fresh results. i've kept every receipt and mileage book since day one, and i might go look all that data up someday... would be a large data post...
btw - this dakota has NEVER been in the shop for anything. i've fixed all the little user-issue stuff myself, changed the fluids (except for tranny flushes) and i'm no mechanic. it's been a superb truck. still looks brand spankin' new. i've had many, many cars/trucks and it is the BEST by a long shot. it'll see 1/2 million miles fer shur before i park it in the collection. proudly!
my overall feeling is that a 4.7 dak, setup like mine, gets the worst mpg when it sees a tundra next to it at a stoplight (or one of the cartoon diesel trucks with the HUGE exhaust and the lil gauge pod thingie in the a-pillar), and it gets the BEST mpg when driven just under 2000 rpm - steadily. it's a torque 'sweet spot' that's hard to maintain since the engine is so playful right about there.
addictive is another word.
jack b :-) in
midland, tx usa
Interestingly, in April when temperatures here were still in the thirties and forties, I ran five tanks of Mobil 93 high test through the Dakota in a row. I noticed that the idle seemed to improve and gas mileage jumped from a previous four week average of 16.43 MPG to 17.21. When switching back to Mobil 87 it remained the same.
Except for changing out the rear differential fluid, I just completed a full tune-up:plugs, PCV valve, air filter, and oil change. I had 49,814 miles on the Bosch Platinum Plus 4s and the air filter didn't seem very dirty.
I immediately noticed a difference. The engine was definately performing better with stronger launches and noticeableby more effortless at cruising speeds. Since this the average has jumped to 18.43 with one tank at 19.88. These were mostly around town miles with about 30% expressway driving.
Although I've recommended the Bosch Platinums to others, this is the second time I've noticed a difference after changing them out. The first time I cannot say I saw a big increase in gas mileage, but then again as others have noticed, the more miles you put on a 4.7 the better they run and the better the gas mileage gets. Anyway, despite claims I wouldn't leave these plugs in for 100,000 miles.
Regards,
Dusty
However, you didn't tell us how many miles you had on this truck. Its possible it could benefit from a tune-up if you haven't performed one yet.
Regards,
Dusty
Instead, it uses MAP (ManifoldAbsolutePressure) sensor.
MAF actually measures airflow. (much more accurate, costs more, ignores dirty airfilter, more susceptible to contamination and burning out.)
MAP has to CALCULATE the airflow based on pressure differential. (less accurate and sensitive to dirty airfilter, very reliable)
The RedLine PowerSteering fluid was $9.50/quart.
When considering this, one must consider the VALUE and not the initial cost. For me, my rear differental was saved from self-destructing when all the fluid came out. (but RedLine leaves lubricating residue.)
Also, my powerSteering no longer needs 5-minnutes of warmup in the winter before it starts to work. (-15F)
Keep in mind that RedLine uses 100% pure synthetic polyol ester basestock. This is expensive stuff that most off-the-shelf oils do not even consider using. Competetive Racecar teams use RedLine becauese it works. (reguarless of what the stickers may say on the OUTSIDE of the car!)
Here is webpage for RedLine ==> http://www.redlineoil.com/default.asp
The polyol ester basestock is used in extreme-duty conditions (Jet turbines, aerospace...etc) and may be more than the average driver needs in his road vehicle.
I beleive that Amzoil may also use some polyol ester basestocks... but over the years I have become put-off by their marketing (pushiness).
The Federal law was changed in recient years to allow manufacturers to CLAIM an oil is "synthetic" even though they contain petroleum-based oil. (MOBIL1, SYNTEC...etc fall into this category) These are not The polyol ester basestock!
With the exception of about 1.5 minutes of actual passing, I kept the cruise control set at 62 MPH all the way to Harrisburg on US15. On 55 MPH highways I stayed at the speed limit.
The return trip, however, was 22.71 MPG on Amoco with 10% ethanol.
Regards,
Dusty