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#1
09-12-2013, 10:58 PM
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2006 Ram 2500 gas mileage
I just bought a used 2006 Ram 2500 w/ a 5.7L hemi and 4WD. It seems to run just fine, and tows beautifully, but I'm only averaging 12 MPG unloaded and only about 7-8 MPG towing a large boat trailer (about 7,000 lb). The 4WD is useful on slippery boat ramps pulling up that big boat. Is this mileage typical for this year/model? If there is anything I can do to help the mileage, I'm open to suggestions.
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#2
09-15-2013, 09:27 PM
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Re: 2006 Ram 2500 gas mileage
When I desire maximum fuel mileage, I run 62mph or the speed limit, whichever is less.
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1992 Bravada, 201K, stock 1997 Bravada, 101K, stock...was "called away"  "Cornbread Red", 2001 Dodge 2500,4X4,HO Cummins Diesel,QC,SWB,6spd.,Banks boost&pyro,US Gage fuel press.,Edge Drag Comp,4"exh.,cowl hood, bhaf, black Holley pump, 140gph...13psi WOT, Vulcan Big Line, kevlar/ceramic single disc clutch, cheapo fuel cooler, 8x.010" vco injector nozzles, Cat turbo 62-65-.70A/R, 497hp 1089 tq 8/25/14  Time to turn so's you don't burn. 
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#3
09-15-2013, 10:30 PM
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Re: 2006 Ram 2500 gas mileage
Guy I work with has a 2003. He says 12mpg. Any history on tune up, cleaning throttle body, tires, alignment?. Anything you can do to aid it.
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Post back, that's what makes Forums Work.
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#4
09-16-2013, 12:33 AM
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Re: 2006 Ram 2500 gas mileage
It didn't come with maintenance history so I don't know what's been done, but one tire was pretty low, so I inflated it and that might help. I plan to check the air filter and spark plugs. What about the throttle body? Do I just spray some carb cleaner into it? Just how accurate are those built in driving computers? That's where I'm reading the mileage.
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#5
09-16-2013, 12:49 AM
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Re: 2006 Ram 2500 gas mileage
Your mileage is about right for the side engine you have. Remember, you damn near at the weight limit to be considered a Marine Invasion Landing Vehicle. I have a 03 1500 with a 4.7, and just going back and forth to work, I average about 13.
You can buy a Jet chip that goes between the wiring harness to the PCM, and that may help. I had one and got 15-16mpg. I had to take it out when my truck started acting up. Turns out, the chip went bad, and it was out of warranty...but I had it form4 years. Good luck.
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#6
10-15-2013, 03:15 AM
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Re: 2006 Ram 2500 gas mileage
Try 0WXX oil, Amsoil or RP in the differentials, keeping the tires at or near max inflation pressure, and a light foot.
I knew a guy that got 20mpg with his 2500 Hemi on the highway. He said to keep the rpms under 2000 was the key.
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Ours: 2020 Jeep Wrangler 2.0, 53k 2013 Toyota FJ Cruiser, 84k Kids: 2005 Honda CRV, 228k
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