mpg question
Administrator / Scooter Bum
Joined: Sep 2002
Posts: 9,086
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From: Central VA
Originally Posted by dieseldork
I Bought My Truck Used And It Already Had 100,000 Miles On It . I Have Put About 20,000 Miles On It Now And The Best I Have Ever Got Is 13 Mpg And That Was On The Highway .and Even After My Bombs It Didn't Improve. I Would Be Thrilled To Just Get 17 Mpg
........"DRIVE IT LIKE YOU STOLE IT"
........"DRIVE IT LIKE YOU STOLE IT"
As an experiment, I drove very carefully for one tank of fuel.
No "jackrabbit" starts, boost kept below 10psi, rpm kept below 2000 rpm, Comp box set on 2X3.
This acheived 18.3 mpg combo city-highway (hand calculated)
The next tank I drove 'normal' for me.
First off the light, highway running at 65 mph (2300 rpm), Comp box on 3X5 (most of the time), Boost wherever my right foot put it.
This acheived 13.8 mpg for the same route.
You right foot is a HUGE factor when determining mpg.
Registered User
Joined: Apr 2004
Posts: 8,234
Likes: 1
From: Texas/Oklahoma Border
Originally Posted by AAmeeting
Its getting cold though and it is smoking a lot more. I wonder what I will get this winter?
RJ
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Joined: May 2002
Posts: 6,522
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From: Sandy, Utah
Originally Posted by j-dubya
with all in town driving my best has been 14.5 mpg-and that was from my first fillup. i just filled up yesterday and after the math i was down to 12.6 mpg. this was the forth time i have filled up since buying the truck two months ago and i seem to lose a mpg every fillup. i filled with citgo the day i bought it and shell for the next two. i filled with citgo yesterday to see if i improve. i was told shell and texaco had the better diesel. why might i be getting such an odd number compared to the rest of you? i know the all-in-town-driving is part of the reason its lower but that low? cmon! i have the tires filled up to about max and im fully unloaded. anyone have any ideas?
jeremy
jeremy
4x4, auto tranny and dual rear wheels.
Not sure where you are located, but in the last 2 months you could be getting winterized fuel, which would knock 1-2 mpg off.
Check the fuel filter, check your fuel pressure, check the cleanliness of your IAT sensor, run some powerservice or similair through it, and take it easy with the go fast pedal.
phox
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Joined: Mar 2005
Posts: 504
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From: INDIANA
Originally Posted by rjohnson
Curious? I notice less smoke in the winter with the cooler air. Mileage does seem to drop off a little (even though we have #2 diesel, yr rd).
RJ
RJ
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Joined: Apr 2004
Posts: 8,234
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From: Texas/Oklahoma Border
Originally Posted by AAmeeting
Cold air is good to a point. Too cold on a diesel and you can lower cumbustion temps enough to not complete combustion hence smoke. How cold does it get there?
"lower combustion temps" is a good argument for adding HP, IMO.
I can hit 1100-1200* anytime I want...just driving to work. Cruising at 70 mph I hold 800* year round.....and that's on a 180* t-Stat. If we get a cold spell...I just snap in a cold front (left over from living farther north) and ready to go!
RJ
Thread Starter
Registered User
Joined: Aug 2002
Posts: 74
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From: Arvada CO
mpg comment
I am in the Denver area and I baby this truck. Coast as much as possible and keep my foot off the boost pedal as much as possible. Tire presures are right at the limit and the fuel filter is new. So I do not see how I can ever get over 20. Which is what the console says. I would hate to see what I got if I drove it like I stole it. I have a car for that and it gets 6mpg on a good day. This is my economy car. Thanks again for all the imput.
Chapter President
Joined: Oct 2005
Posts: 1,763
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From: A state of Missery (Missouri)
Mpg
How many people go to the trouble to see if their odomiter is correct, before they change tire size? After haveing six of these trucks I don't depend on the factory to have the odomiter right some of you need to make sure that 1 mile is 1 not .8 or .9 on your odomiters. I ran hot shot and asked everyone I met and consitantly saw 12-15mpg loaded and 18-19 empty hwy 65mpg 355 or 410 gears. My current truck the OD was corect and the speedo was of with stock tires. Now with the 235 tires the speedo is correct and the OD is off.
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Joined: Aug 2005
Posts: 554
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From: Oklahoma
Originally Posted by Shovelhead
You right foot is a HUGE factor when determining mpg.
Registered User
Joined: Aug 2005
Posts: 554
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From: Oklahoma
Originally Posted by Shovelhead
Are you hand calculating, or going by the MPG "Guesser" in the console?
but i came up with 17 for both.
