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  #21  
Old 12-14-2012, 07:22 AM
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JoshikusIII JoshikusIII is offline
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Good info...I don't have as much knowledge and experience as most of you on here or else I might have guessed it on my own, but this makes sense.

So the logical solution here is to change gears to 3.92, why don't they come that way from factory? Because as it sits right now I feel like I was frauded and should sue Dodge for false claims.

Class action guys. Class action...
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  #22  
Old 12-14-2012, 08:46 PM
mikennrg mikennrg is offline
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Quote:
Originally Posted by JoshikusIII View Post
I feel compelled to chime in this post even though it's older...I am too having a BEST mpg of around 13mpg which is very dissapointing since the sticker in the window said 16-22. I've been researching and thinking about this a lot. Yes we bought hemi's. Yes they don't get the best mileage. The average reported mpg of '11-'12 stock Hemi's is 15-17mpg. So logically and scientifically this evidence suggests that there is an unknown variable in some of our trucks leading to a 2-3 mpg loss. I'm at 5000 miles right now, my last tank I filled up I drove it down to E and got 325 miles...that's with a light foot and 50% or more on the freeway. I never stomp the pedal and rarely hit up to 2500 rpm's on acceleration. I always use 89, I put a drop in K&N and cut the hole in the bottom of the airbox for better air flow and changed the oil to Amsoil synthetic @ 1000miles(these changes weren't recent so yes the computer has had time to adjust). If anything I lost mileage after the changes that should have improved it. I bought my truck in July 2012. I'm about to put exhaust, intake and tune on it but am hesitant if it's not running at full efficiency on it's own. Also I should mention on freeway road trips I get about 100 miles more per tank so apparently the MDS is working just fine.
16-22mpg?
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  #23  
Old 12-16-2012, 09:43 AM
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same here i was getting 15 to 16 when new only 1,000 miles now im at 4000 and every week i get around 12.8 mpg around town only . my ram hardley ever sees the highway but when it does i still only see around 15 at best.I use 87 octane and am sure that has allot to do with it . I drive a 2010 f350 super duty 2w drive Aat work and that only gets 9 to 10 mpg from day 1 so im not to worried.I know what the sticker said when i first looked at the ram and i have never gotten close to that 15 to 17 in town and 20 highway LOL

Last edited by Ductmate; 12-16-2012 at 09:45 AM. Reason: F 350 IS MY WORK TRUCK
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  #24  
Old 12-18-2012, 09:14 AM
fxdrider fxdrider is offline
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Quote:
Originally Posted by jfuhrmei View Post
We live in Iowa so it is generally pretty flat.
Also can be quite windy, as I recall. Been to Iowa a few times, lived in neighboring Illinois for a year. Tail winds can help your fuel economy, but even a medium headwind can wreak havoc! These big trucks can act like a parachute. Don't know if this is a factor in your case or not, just wanted to toss it out there. Speed also. I know driving at 60 mph isn't as enjoyable/fun as 70, but typically you can get much better fuel economy at 60. Many times that's just not practical, though.
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  #25  
Old 12-18-2012, 11:34 AM
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Quote:
Originally Posted by JoshikusIII View Post
Good info...I don't have as much knowledge and experience as most of you on here or else I might have guessed it on my own, but this makes sense.

So the logical solution here is to change gears to 3.92, why don't they come that way from factory? Because as it sits right now I feel like I was frauded and should sue Dodge for false claims.

Class action guys. Class action...
u shouldnt feel frauded i up to u to know what ur buyin perticulrly with i truck. axle ratio was the first thing i wanted to know as 3.55 is factory standard 3.92 should be better city mpg oh and im getting 11 mpg right now with cold wether winter gas and only 2000 miles on the truck
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  #26  
Old 12-18-2012, 10:32 PM
Ken Williams Ken Williams is offline
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I purchased a 2012 1500 Hemi and I'm getting over 15 MPG with City Driving! I don't get on it and try to take off from lights at a gradual speed. I have approx. 400 miles on mine. I have 2 friends that are getting 16 in the city and 20-21 on the highway. Take it slow!
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  #27  
Old 12-20-2012, 03:32 AM
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All Synthetic fluids in everything.
E3 Plugs.
MSD Coil, much hotter more powerful spark.
New MSD Wires.
Cold air intake, DIY or name brand, just use K&N filter.
Headers & dual exhaust. I wrap my headers.
Remove engine fan & replace with dual electrical fans. gives more HP too.
I replaced bearings with best available for less rolling resistance.
I inflate my 285/75/16's to 48LBS and rotate every 4K.
Take out & clean injectors or have an injector cleaning done professionally.
Remove ALL extra & not needed weight.
Easy on gas pedal, manuals are better on gas.
Coast on hills, coming up to red lights/stop signs, IN Neutral.
I changed my 5.9 to a 5.2 & MPG is WAY better.
Use AC only if absolutely necessary.

I live in Rural area east of Toronto and have many times turned engine off and coasted down large hills for up to 7.5K or 4.5 miles.

MPG stays around 19-21 depending on how much I HyperMile

I hate the greedy oil companies & once I get a diesel again I will make my own BioDiesel for $1.10 a gallon

1998 Ram 1500 4x4
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  #28  
Old 01-03-2013, 07:04 PM
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My 2012 is also getting poor fuel milage 13.5 is what I am seeing in town and 17.5 is the best I have seen on the highway. This truck is almost identical to the 2010 ram that I had. The differences in the trucks are the transmission and gear ratio. Both trucks are crew cabs and I drive the same route everyday. My 2010 had the 5 speed transmission with 3.92 gears while my 2012 has the 6 speed with 3.55 gears. I would have thought the truck would get better mileage with the 6 speed and a taller gear ratio. My 2010 truck would get 16 mpg in town and 18.5-21 on the highway. I usually run in the 77-78 mph range on the highway. On a recent trip I even slowed down into the low 70 mph range with the new truck and it still didn't do any better. One thing I have noticed with my 2012 is that it will not go in to 6th gear until I am in the 62-63 mph range where as my old truck would go into 5th if I was running 35 mph. I am pretty disappointed in the mileage and I am already considering moving on to something else.
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  #29  
Old 01-04-2013, 03:01 AM
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As has been said - NO idling. Idling will kill your mileage. Slow down, and be easy on the gas. Also something else that has a big hit on mileage is how far you drive. I have a four mile one way commute, and it plays hell with my mileage. The truck can barely get out of open loop mode before I pull into the parking lot. The cold weather and winds will also hurt. I drove to Minot and back today. When I pulled into Minot, my fuel economy meter was reading 21.5. When I got home, I had a bit of a head wind, and it fell off to 19.4, and this is with me keeping to 55 mph. I have just over 500 miles on mine now.
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  #30  
Old 01-04-2013, 11:02 AM
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I do not want to sound ignorant. Why do people expect good gas mileage in a 5,000 lb truck? We drive full size trucks and should be happy they found a way for us to get 17 on the highway....
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