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Discussion Starter · #1 ·
A coworker has a 98 3/4 ton 4x4, 5 spd, Cummins truck...He claims 26 mpg, unloaded, and 23 mpg when towing a bigass trailer full of hay. I called BS on him, so I was wondering what you guys get for mpg with a Cummins.
I only have one friend with a similar truck, and he gets around 20mpg, while driving like a grandma, but the truck does have a Banks Power Pack, which I am sure alters things.
ANy info would be great <IMG SRC="smilies/biggrin.gif" border="0">
 

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20mpg. Mine is an 01 3/4 ton longbed extracab HO. If I lived in the flatland I'm sure it would be a bit better. I pull long grades every day on the way home from work. Those numbers seem too good to be true, imo.
 

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The mileage is little high. I think he could get about 20 to 21 MPG max unloaded. I would think he could get anywhere from 14 to 17 MPG loaded depending on how heavy his foot is. I got about 14 MPG towing 80 MPH up the mountains going to Tellico.

Charles
 

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he's bull shitting you. when it comes to milage and dick lenght there is more bullshit than anything else. i drove a cummins for 200k and the best mine ever got was 19.7 mpg with 4.10 and 4x4 my buddie and my uncle can get 23 to 24 if they take it easy unloaded. but they are 2wd 3/4 ton. i just drove up to oklahoma city with a 96 1 ton dually and got 13.3 average with a 28 ft. goose on the back. it was empty on the way up and i picked up a 2 and a 1/2 ton kiaser 10 wheel drive truck. i was pleased with the mpg. they will still beat the power stroke in the milage catagory. i am about to pick up another for a tow rig. damn good trucks just not as good as your bud says. later mike
 

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Discussion Starter · #6 ·
Originally posted by SquirrelMaster:
<STRONG>any modifications? there are a few opions out there that really help MPG and if he drives slow on flat ground that could be possible</STRONG>
It's stock. And he usually drives at roughly 75mph.

Thanks for the info guys <IMG SRC="smilies/biggrin.gif" border="0"> Just as I thought, looks like I can lay the smackdown on this fool, now that I have some info <IMG SRC="smilies/biggrin.gif" border="0">

[ 09-18-2001: Message edited by: OGGIE ]
 

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Originally posted by basser:
<STRONG>i have 2001 3/4 ext cab 4x4 6 speed, it gets around 18-19 unloaded and 14-15 with trailer and jeep. </STRONG>
Close to mine 98.5 24 valve except one time I got 20 MPG with the Jeep in tow.

It seems to get better mileage if the RPM,s are up. <IMG SRC="smilies/usa.gif" border="0">
 

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93 W250 auto 4.10 21-23 unloaded 19-20 with trailer depending on how heavy I am on the throttle
 

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Originally posted by basser:
<STRONG>i have 2001 3/4 ext cab 4x4 6 speed, it gets around 18-19 unloaded and 14-15 with trailer and jeep. i hear the 2wd get around 22-23 and 17-18.........</STRONG>
Mine is 2wd barely broken in and I get 14 with a load and I don't know without....I have never driven it long enough without a load to see!

Mixed city/loaded Hwy is usually 16 mpg.

6 speed 2wd HO Cummins.
FYI
 

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I have a 97 extended cab longbed 4x4 with the turbo cummins five speed with gearvendors overdrive.

I get 20-24 over the road empty and 18-21 loaded with my jeep and trailer.
 

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2001 Dodge, 4x4, extended cab, automatic.
about 13mpg towing and 16mpg around town.
(and the 13 is on a good day) <IMG SRC="smilies/frown.gif" border="0">
 

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Discussion Starter · #14 ·
Originally posted by AIRZUKI:
<STRONG>I've got a '92 3/4 ton 2wd auto with the 3.55 axle and I consistently get 950 Km on a full tank ( mostly daily driving unloaded )
<IMG SRC="smilies/wink.gif" border="0"></STRONG>
How many Liter's in a full tank? <IMG SRC="smilies/thefinger.gif" border="0"> <IMG SRC="smilies/biggrin.gif" border="0"> 95-110??
 

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The best mileage for a 24 valve Cummins motors is like 2100-2300 RPM. This is the range in which you want to be towing since it seems to be the "sweet" spot in terms of torque. The older 12 valve Cummins seems to have to most torque at 1600 to 1800 RPM. Of course adding some aftermarket stuff will change the timing and torque somewhat.

BOMB (better off modified baby) ON!

Charles
 

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I have a 98 Dodge Dually 4x4 and I get about 17mpg in the city with very little traffic. Would be nice to get a few more miles to the gallon with deisel prices so fawkin high.
 
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