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newblade
01-15-2005, 12:22 AM
What is the best way to add mpg to a diesel? What is the best that anyone is getting without pulling anything? I also don't want to spend a lot to increase it. I don't have one yet but I am looking to but either a Dodge or Ford.

Avery
01-15-2005, 12:29 AM
Best way to get good mileage out of a diesel is to first buy a Chevy. Next would be to chip it and do some intake/exhaust work. But trust me on the Chevy part. Had a Powersmoke. Chevy will run circles around it while getting 7-10 more mpg. Dodge, decent engine but the tranny sucks.

I get mid to high 20's with my '02 Duramax.

competitiveimageland
01-15-2005, 02:26 AM
all the major manufacturers have good diesel trucks out right now , but i would go with a good old ford f 350 7.3 powerstroke .
dependable ansd easy to work on. i know the last guy was talkin bout 6.6 diesels not sayin they are a bad motor but they have an insane amount of turbo lag which sucks and forget aobut workin on em , just bring it right to the dealer. the new cummins HO is amazing motor if you can deal with driving a dodge "motor will last ya 500k, body will rot off at 100k :p '

LwnmwrMan22
01-15-2005, 04:06 AM
I run all Dodge after having problems with Chevy trannies.

Anyways, to each his own, it's all personal preference anymore.

I know my 2003 Dodge 2500 4x4, 3.73 rearends, the new high output diesel, stock, no chip, no exhaust work, going down the freeway @ 65 mph, no trailer, 24 mpg.

75 mph, 20 mpg.

55 mph, 27 mpg.

Pulling a 24' v-nose all aluminum trailer, grossing out about 10k, about 14 mph.

This is all about 3 miles per gallon better than my 2002 Dodge, same setup with the "non" high output diesel.

j fisher
01-15-2005, 09:21 AM
.

I get mid to high 20's with my '02 Duramax.[/QUOTE]

I'm only getting 13.5 with my 01 Duramax. Of course, this is on the job, stop and go city traffic. How bout the rest of you Duromax guys. What's everyone getting?? Do I have a Lemon?

grass-scapes
01-15-2005, 12:35 PM
I get around 10-11 mpg pulling my 8X20 Haulmark around town. What really sucks is that I moved out to the county last year. Its around 8 miles to my first customer. :cry:

Travis Followell
01-15-2005, 06:27 PM
I run all Dodge after having problems with Chevy trannies.

Anyways, to each his own, it's all personal preference anymore.

I know my 2003 Dodge 2500 4x4, 3.73 rearends, the new high output diesel, stock, no chip, no exhaust work, going down the freeway @ 65 mph, no trailer, 24 mpg.

75 mph, 20 mpg.

55 mph, 27 mpg.

Pulling a 24' v-nose all aluminum trailer, grossing out about 10k, about 14 mph.
Is your truck an auto or a 6 spd.?

This is all about 3 miles per gallon better than my 2002 Dodge, same setup with the "non" high output diesel.
Is your truck an automatic or a 6 speed?

PMLAWN
01-15-2005, 06:33 PM
Best way to get better MPG is to go down hill .

What do I know I have a 8.1 in a duelly. 6.2MPG Yea baby!!

Stoped today to test and research the Dodge Sprinter- 20-25MPG.
Does anybody use this yet. They make a cab chassis and I was thinking about using that for the mowing crews. Any info?

LLandscaping
01-15-2005, 06:36 PM
We have an 04 Chevy Duramax 4x4 that gets about 14mpg pulling our 7x16 open trailer and about 17-18mpg empty on the interstate. The best we have gotten is 19mpg on a long trip. The truck also has about 28,000 miles I'm wondering if the mpg will get better with more miles.

LwnmwrMan22
01-15-2005, 06:42 PM
Is your truck an automatic or a 6 speed?


Automatic, with or without the air conditioner running.

LwnmwrMan22
01-15-2005, 06:43 PM
Best way to get better MPG is to go down hill .

What do I know I have a 8.1 in a duelly. 6.2MPG Yea baby!!

Stoped today to test and research the Dodge Sprinter- 20-25MPG.
Does anybody use this yet. They make a cab chassis and I was thinking about using that for the mowing crews. Any info?


I'ev LOOKED at using one. I thought it'd be nice to be able to carry the fertilizer, chemicals, etc., but I have a hard time justifying one, since you can't use it for plowing, which I need my pickup for.

j fisher
01-15-2005, 06:44 PM
Two things a man will lie about. One is his fuel mileage, the other is his sex life. I consider myself a pretty honest person. MINE BOTH SUCK!

BOTURF
01-15-2005, 06:45 PM
01 chevy 8.1 with ally tanny havent pulled with it yet but empty getting about 9.5 to 10.5 highway driving , couldnt justfiy extra cost of a duramax ( 4500.00) 4500 will by alot of gas and then maintanence cost alot more , its just my personal prefrence

j fisher
01-15-2005, 06:48 PM
01 chevy 8.1 with ally tanny havent pulled with it yet but empty getting about 9.5 to 10.5 highway driving , couldnt justfiy extra cost of a duramax ( 4500.00) 4500 will by alot of gas and then maintanence cost alot more , its just my personal prefrence

10 mpg Highway?? Man, I hope your sex life is better!!

PMLAWN
01-15-2005, 06:52 PM
Boturf--My 8.1 will get about 10 on the open road pulling a 9000# trailer so your MPG should nt drop too much.

RedWingsDet
01-15-2005, 06:58 PM
I really wish I had a diesel.... Hopefully Ill have a 05 chevy diesel in 2 months.... So far this month, from jan 1st-today.... I just added my reciets up for gas, and I've spent $260 on gas so far.... And were just halfway through the month!!!!! Gassers are NOT FOR ME!!!!!

GLS
01-15-2005, 08:24 PM
Our duramax will get about 20mpg at 75 mph. I suspect it would do a lot better at 65 mph or better yet 55 mph. Towing trailer/equipment around town it gets about 14mpg. That is with a heavy foot at all times :) We have been getting 12-14 recently though in the cold weather (mostly city w/ additive and winterfront). Those are the real numbers, I have no reason to lie about my fuel economy.

The old 350 gasser gets 12 at best (on the highway). Towing trailer in town it gets 8-9mpg.

We didn't buy the diesel for fuel savings though. It would take a LONG time to pay for the extra cost of a diesel engine through fuel savings. We bought mostly for the power; and for the ability to easily upgrade to more power :)

Randy J
01-15-2005, 10:52 PM
The good thing about diesels is that anything you do to improve performance, will almost always improve fuel mileage - within reason. With the Dodge, you'll likely get high teens to low 20's empty, don't know for sure about the others, but don't think there will really be that much difference on average. Some trucks will do better than others, but I think the 3 major diesels are averaging around 20 or so. One other thing to consider is switching all fluids to synthetic. They'll perform better, last longer, and improve fuel mileage. In my '98 Dodge, I improved about 1.5mpg when I switched all fluids over to synthetic. I used Amsoil, but there are other good synthetics out there also. I would stay away from a K&N filter, although oiled foam (such as the Amsoil) are ok. The turbos tend to suck too much dirt through the K&N. Oiled foam tends to trap more dirt. You're probably better off staying with stock type paper filter.

stumper1620
01-16-2005, 09:54 AM
well with a ford sd-250 7.3dsl, hit a deer dead center to sink the bumper under. milage was up to 20 after i hit the deer, dropped to 13to 16 after repaired, never gained any back.
i want my old bumper back.
steve
oh ya gotta hit it at least 60mph. :dizzy:

timturf
01-16-2005, 10:06 AM
Two things a man will lie about. One is his fuel mileage, the other is his sex life. I consider myself a pretty honest person. MINE BOTH SUCK!

need more honest men like you.

lwcmattlifter
01-16-2005, 10:41 AM
Randy J is right about the oil element filters, they are bad news for a diesel. I run a Donaldson on my truck. With a chip, exhaust and open element air filter on my powerstroke i get 18-20 hwy and between 14 and 16 towing depending on how heavy the load.

clcare
01-16-2005, 11:08 AM
03 chevy dually 6.6 with allison auto 20-25 without trailler 14-16mpg with 16 foot dump and my rc50 on board my previous ford got... well lets not talk about it okay. And the dodge before that was great motor if you can keep tranny's and rear ends/ frontends in them.

aardvark1
01-17-2005, 09:48 PM
One guy stated that 2 things a guy will lie about is his sex life and mileage. As for the mileage, I keep track of mine every fill up. I fill it all the way up everytime and keep the miles and then just do simple division. I have a 1995 Ford F350 Crew Cab 4X4 Long bed with 3.73 rear. Get about 13 in town, 14-15 doing 75, 17-18 doing 60-65 and 20-21 doing 55 empty. I think the best way to improve mileage on a diesel on the highway anyhow is to drive slower and/or get a higher geared rear-end. Don't care what anyone else says, you can't beat the time-honored 7.3 PSD. Chevy finally started using a real diesel motor engineered I believe by Isuzu and Dodge has tranny issues. I haven't seen enough Duramax's with 300+K miles to be convinced on them, but they are definitely better than their old converted 350 they used to call a diesel.

lawn perfection
01-18-2005, 12:53 PM
I have a 2001 powerstroke and i get around 18mpg empty and abut 16 when pulling

Guthrie&Co
01-18-2005, 04:45 PM
Best way to get better MPG is to go down hill .

What do I know I have a 8.1 in a duelly. 6.2MPG Yea baby!!

Stoped today to test and research the Dodge Sprinter- 20-25MPG.
Does anybody use this yet. They make a cab chassis and I was thinking about using that for the mowing crews. Any info?
the correct spelling would be dually. not duelly

PMLAWN
01-18-2005, 09:09 PM
They teach the spelling of dually in 5th grade and I only made 4th.

So sorry.

Scag48
01-18-2005, 11:25 PM
17 MPG with our F-350 7.3 on the highway at 60 with around 1,000 pounds of tools in the bed. I get 18 MPG on the highway at 60 unloaded with my GMC Sierra with the 6.0 litre Vortec. I'm usually getting around 12-13 towing the mowing trailer around town. I added about 3 MPG on the highway by putting a Flowmaster muffler on my truck and a K&N air filter. Gotta let these things aspirate, then you really start to get better mileage, let alone a pretty substantial amount of horsepower.

alpine692003
01-22-2005, 11:24 PM
I just bought a 2nd truck..

1997 Dodge Ram 1500
V8 - 5.2L
Automatic
4x4
160,000 KM

I hope this puppy will treat me well in the gas department, welp :cry:

kc2006
01-24-2005, 12:59 AM
I've got a 96 f250 4x4, has 245,000 on it now, and i'm getting 21-23 mpg around town and 18-20 towing. Just did alot of basic cheap mods that would help mileage. First got gauges to keep track of whats going on, home made cold air intake, changed out all the fluids ( i still need to change the fluid in the diffs), put a tonneau cover on it, got rid of that cat and will be getting rid of the muffler soon also, and a homemade chip (its a ford modification that changes the way the injectors hit, costs about a quarter to do, from what i hear its basicly all the one Edge chip is). When i bought the truck i was getting 11-13 mpg. During the winter mpg goes down alittle bit plus in 4x4 it drops some, the other day I was getting 17mpg but i was having alot of fun in the snow.

lwcmattlifter
01-24-2005, 03:46 PM
KC2006, did you put a 10k ohm resistor in the ICP sensor? If not what did you do to make the injectors "hit" differently that gave you the power of a chip?

kc2006
01-24-2005, 06:31 PM
5.6K on a switch. I noticed a huge difference after doing this. I read on "thedieselstop" website that one of the Edge chips is basicly the 5.6K with diodes in it so you don't get the rough idle.

lwcmattlifter
01-25-2005, 11:42 AM
I had a 10k in my 97. It makes the idle lope a little if I run the engine real hard or if I have been at high speeds for a while and come to a stop. I have a "Bill's chip" from before he merged with Edge, and there is no way the 10k (not sure how different the 5.6k is) can compare to it. The throttle response and power from the chip is incredible. I can smoke the tires in 1st, 2nd and 3rd. With the 10k i can only hit 15lbs of boost. With the chip i can easily get 25-27 lbs. I thought the same thing about the ICP mod until one of my friends let me drive his chipped truck. I bought a chip soon after and there is no way I would ever go back.