|
|
Member
Posts: 16
Location: Clarence Center, NY |  We bought a brand new '07 Chevy one ton dually Duramax Diesel with the 6 speed automatic. It's got 3000 miles on it now, and we are only getting 13.4 miles per gallon around ton, and 14 mpg towing an empty horse trailer on the highway....Is this right? My old 3500 Dodge Ram dually got 20 mpg average....I don't really want to do anything to the truck to make the warranty void, but this just makes me sick...Any ideas?
Edited by artisticgold 2008-06-02 10:10 AM
|
|
| |
|
Extreme Veteran
Posts: 379
 
Location: Columbia, TN | Welcome to the newer Trucks especially now that Fuel is $3.35 a Gallon. I don't think any of the newer trucks are getting very good mileage, Chev,Ford or Dodge |
|
| |
|
Veteran
Posts: 148
Location: columbia tn | my dodge 3500 diesel 05 model gets around 17 and pulling trailer 10'lq 3h it gets around 12-14.. i have a 93 d350 with 103,000 on it and it gets like 22 and 17- pulling but it cant handle this new trailer without adding some help to it...its bad when it take over 100 bucks to fill up your truck... happy trails |
|
| |
|
Expert
Posts: 1416
Location: sc | Maybe it would run better if you put diesel in it instead of gas???? My 04 Dmax gets 13-14 pulling my little 2H trailer.........so yes, yours sounds about right. Some people will tell you the mpg will come up after "break in", but I would not get too excited. These horsepower wars between manufacturers are NOT good, or necessary IMO. |
|
| |
|
 Extreme Veteran
Posts: 303
Location: Grapeland, Texas | I got the same truck in Sept. and get the same mileage on mine, it has 2,800 miles on it right now. My 03 one ton dually Duramax got about the same as this one, but the new one has way more power. |
|
| |
|
Expert
Posts: 3853
 
Location: Vermont | What kind of MPH are you doing? |
|
| |
|
New User
Posts: 2
| I've got an 05 duramax dually that gets between 15-16 around town and 9-13 with my trailer. I wish it'd get better mileage. The truck has 85,000 miles on it, and the oil is changed every 6,000 miles with the fuel filter being changed every 12,000 miles. I pull a 1997 sooner 4 horse slant with a 6 foot dressing room. It's not a heavy trailer and the truck handles it with no problem... I really hate how much it's costing to fill the durn thing up. |
|
| |
|
Extreme Veteran
Posts: 303
Location: Grapeland, Texas | I try real hard now to keep my speed at about 65. All the farm to market roads around here have a speed limit of 60, which as bad as they are 55 is probably safer. Of course the slower I go the better the mpg are, but my foot tends to get heavy at times. My truck is also a 4 wheel drive and they said between that and the extra tires in the back that is also cuts into your fuel mileage. Is there any truth to that?
Edited by longearsrule 2007-11-21 8:36 AM
|
|
| |
|
Expert
Posts: 3802
Location: Rocky Mount N.C. | I don't think the difference in mileage really makes that much difference, 9 verses 13?...........It's the cost of the fuel, last year this time it was $2.16 a gallon, what is it today?....$3.22 at the flying J at Kenly N.C. Filled up my truck and destroyed $100.00 bill. |
|
| |
|
Regular
Posts: 71
Location: Northern CA | We have two Duramax's an 02 and an 06. Both have Banks Exhaust, AFE Air Intakes and an Edge Chip. The 06 has a few other mods. Both of these trucks will run 20+ mpg on the hiway (driving 70mph or so) empty and get 15-17 mpg towing (Speed 62-65mpg). Around town, The mileage is about 17mpg empty and about 15 towing (short trips). I commute 180 miles a day to work roundtrip and saw a good increase in mpg with the edge chip. They do have a significant break in- we never saw good mileage until around 15,000 miles). We have a friend with an 04 Dodge and it does really well on the diesel, I drove it to Texas empty and picked up a boat and hauled the boat home. It got about 22mpg on the way out (driving 70-80mph) and got about 16 towing the boat back to California (about 65mph). This truck had no modifications. I will add that though we may travel in excess of the hiway speeds, we drive these trucks easy, no racetrack takeoffs and are pretty consistent with the speed once the car is rolling. I think this affects the mpg also. |
|
| |
|
 Regular
Posts: 51
Location: Labelle, FL | My husband had an 07 Duramax 3500 dually and it drank the diesel. He was really pissed cause my 2000 Dodge is getting 24.2 on the Hwy and 18 towing my 3 h with 6' Lq fully loaded His employer got rid of it.
Edited by Copper1272 2007-11-21 9:24 AM
|
|
| |
|
Expert
Posts: 3853
Location: Vermont | The other issue is...do you have an 07 with the extra emission controls or an early 07 without them? |
|
| |
|
Elite Veteran
Posts: 644
Location: Odenville, Alabama | I have an 06' Duramax 3500 dually. I get around 14mpg empty, and 12 with the trailer. Now here's a question for those who may know the answer. I think (now I'm sometimes half crazy, so bear with me here), that I got better fuel mileage before the low sulphur fuel was introduced. Could that be??? |
|
| |
|
Extreme Veteran
Posts: 544
Location: Claxton, Ga. | Originally written by N2ridin on 2007-11-21 9:35 PM I have an 06' Duramax 3500 dually. I get around 14mpg empty, and 12 with the trailer. Now here's a question for those who may know the answer. I think (now I'm sometimes half crazy, so bear with me here), that I got better fuel mileage before the low sulphur fuel was introduced. Could that be??? Your not crazy. Most people lost 1 mpg when the ULSD came out. Make sure to get fresh fuel and it is not so bad. About the same. |
|
| |
|
Expert
Posts: 3853
Location: Vermont | Originally written by artisticgold on 2007-11-20 5:32 PM We bought a brand new '07 Chevy one ton dually Duramax Diesel with the 6 speed automatic. It's got 3000 miles on it now, and we are only getting 13.4 miles per gallon around ton, and 14 mpg towing an empty horse trailer on the highway....Is this right? My old 3500 Dodge Ram dually got 20 mpg average....I don't really want to do anything to the truck to make the warranty void, but this just makes me sick...Any ideas? Read this thread... http://www.thedieselpageforums.com/tdpforum/showthread.php?t=22264 And ask your questions about your Duramax over here... http://www.thedieselpageforums.com/tdpforum/
Edited by PaulChristenson 2007-11-22 12:41 AM
|
|
| |
|
Member
Posts: 11
| Are any of you adding an additive to your fuel on your trucks that are a 2006 and older? I lost some mileage with the new ULSD and have gotten it back with using the Lucas Fuel additive plus I get the lubrication that was taken out of our Diesel fuel. |
|
| |
|
Member
Posts: 16
Location: Clarence Center, NY | ok, so now we have 6,500 miles on the truck, and the mileage has gone down to 12.6 around town, we started at 13.9....sigh! We just got a recall notice for a "programming error that can result in Engine Control Module memory damage and will cause the engine not to crank or start. This is more likely to occur the longer you operate the vehicle". Is this a probable cause for the poor fuel mileage? Anyone else have this same vehicle, and how are your trucks doing as far as economy. |
|
| |
|
Member
Posts: 16
Location: Clarence Center, NY | Oh, we have the newer body style '07, it was made just a few weeks after the change over from the older body style....so we have the stricter emissions? |
|
| |
|
Location: Where the wind comes sweepin' down the plain... | I have an 07 DMax and highway getting around 17-19 mpg running 70-75 mph. Pulling I am getting 10-13. I have a tendency for my foot to get heavy, and when it does, my mileage goes down. This is my 3rd one. Best mileage yet. Bully Dog chip in it at setting 2 and the mileage is better with it as long as I keep my foot out of it. The other two, I used an Edge in one, and the Hypertech in the other. All three chips increased my mileage. |
|
| |
|
Expert
Posts: 2614
| Same thing with our '05 Duramax and Bullydog chip. My friend's husband just got a new Toyota hybrid,45 mpg! I don't think we'll be able to get anywhere close to him.But he can't pull trailers,either.
Edited by crowleysridgegirl 2008-06-02 11:00 AM
|
|
| |
|
Expert
Posts: 5870
Location: western PA | Originally written by KAB on 2007-11-22 2:00 PM Are any of you adding an additive to your fuel on your trucks that are a 2006 and older? I lost some mileage with the new ULSD and have gotten it back with using the Lucas Fuel additive plus I get the lubrication that was taken out of our Diesel fuel. I've used Marvel Mystery Oil for several decades on all our diesels and our classic cars. Occasionally I use Amsoil diesel fuel additive and find it works well. Gard |
|
| |
|
Expert
Posts: 3802
Location: Rocky Mount N.C. | (quote) We bought a brand new '07 Chevy one ton dually Duramax Diesel with the 6 speed automatic. It's got 3000 miles on it now, and we are only getting 13.4 miles per gallon around ton, and 14 mpg towing an empty horse trailer on the highway....Is this right? My old 3500 Dodge Ram dually got 20 mpg average....I don't really want to do anything to the truck to make the warranty void, but this just makes me sick...Any ideas?
I would be really careful of what I put in the fuel tank of these new engines with the "regen" systems on them. It don't take alot to clog or plug up some of this smog crap!! These newer engines don't get as good of mileage as the older ones. If you are using these newer trucks for more of a "grocery getter" rather that a pulling truck, then YES, your mileage is and will be way down. Truck never gets hot enough to burn all the soot out so the system dumps a little extra fuel to help burn everything clean. You are actually burning fuel in the "regen cycle" that you are in no way gaining or making any extra power with. Here is a place that will answer some of your questions... http://www.dieselplace.com/forum/forumdisplay.php?f=174 |
|
| |
|
Expert
Posts: 3853
Location: Vermont | Originally written by gard on 2008-06-02 12:12 PM Originally written by KAB on 2007-11-22 2:00 PM Are any of you adding an additive to your fuel on your trucks that are a 2006 and older? I lost some mileage with the new ULSD and have gotten it back with using the Lucas Fuel additive plus I get the lubrication that was taken out of our Diesel fuel. I've used Marvel Mystery Oil for several decades on all our diesels and our classic cars. Occasionally I use Amsoil diesel fuel additive and find it works well. Gard GM has right in their documentation...that additives are not to be used in their Duramax diesels... |
|
| |
|
Extreme Veteran
Posts: 346
| I would be really careful of what I put in the fuel tank of these new engines with the "regen" systems on them. It don't take alot to clog or plug up some of this smog crap!! These newer engines don't get as good of mileage as the older ones. If you are using these newer trucks for more of a "grocery getter" rather that a pulling truck, then YES, your mileage is and will be way down. Truck never gets hot enough to burn all the soot out so the system dumps a little extra fuel to help burn everything clean. You are actually burning fuel in the "regen cycle" that you are in no way gaining or making any extra power with. Here is a place that will answer some of your questions... http://www.dieselplace.com/forum/forumdisplay.php?f=174 Hey I guess I am in trouble...the old 2500 daily driver gets whatever is left around for additive. And I mean everything. So far its worked. 2 cycle oil, dextron, fuel treatment, its an 07 classic style though. Also Retento i have never actually had the problem of not burning the soot out....what do you think?? in either truck. that is what having a lead foot will cure. |
|
| |
|
Extreme Veteran
Posts: 346
| I would be really careful of what I put in the fuel tank of these new engines with the "regen" systems on them. It don't take alot to clog or plug up some of this smog crap!! These newer engines don't get as good of mileage as the older ones. If you are using these newer trucks for more of a "grocery getter" rather that a pulling truck, then YES, your mileage is and will be way down. Truck never gets hot enough to burn all the soot out so the system dumps a little extra fuel to help burn everything clean. You are actually burning fuel in the "regen cycle" that you are in no way gaining or making any extra power with. Here is a place that will answer some of your questions... http://www.dieselplace.com/forum/forumdisplay.php?f=174 Hey I guess I am in trouble...the old 2500 daily driver gets whatever is left around for additive. And I mean everything. So far its worked. 2 cycle oil, dextron, fuel treatment, its an 07 classic style though. Also Retento i have never actually had the problem of not burning the soot out....what do you think?? in either truck. that is what having a lead foot will cure. |
|
| |
|
Expert
Posts: 5870
Location: western PA | Originally written by PaulChristenson on 2008-06-02 1:07 PM Originally written by gard on 2008-06-02 12:12 PM Originally written by KAB on 2007-11-22 2:00 PM Are any of you adding an additive to your fuel on your trucks that are a 2006 and older? I lost some mileage with the new ULSD and have gotten it back with using the Lucas Fuel additive plus I get the lubrication that was taken out of our Diesel fuel. I've used Marvel Mystery Oil for several decades on all our diesels and our classic cars. Occasionally I use Amsoil diesel fuel additive and find it works well. Gard GM has right in their documentation...that additives are not to be used in their Duramax diesels... I currently have a Ford 7.3 PS and three Kubota diesels, no GM equipment. I also use Marvel Mystery Oil in our classic cars that were designed for leaded gasoline as a top cylinder lubricant. It has enabled me to use the vehicles, while using unleaded gasoline, without having to pull the cylinder heads and upgrade the valve stems and seats in their engines. It works very well indeed. Paul, I know you don't like MMO, but after decades of personal usage with excellent results, I have no plans on switching now. Gard
Edited by gard 2008-06-02 3:03 PM
|
|
| |
|
Member
Posts: 30
Location: Alberta, Canada | My 2 cents I own a 2000 3/4 Dodge 4x4 (270000 miles) which I use to pull a 1990 Trail-et 3H 22 foot with a sm lq's. I haven't weighed the trailer yet but it is probably medium weight. I went to Ohio to get it and on my way out there my truck started to "cough" going thru Chicago (scared the crap out of me!) Found some additive and never did it again I found that American diesel was very different from Canadian diesel as I do not normally use additives. I worked it out my costs and it was $0.12/mile there and appr. $0.18/mile back. I have friends who have bought new Dodges, Chevs and Fords, quizzed them as I wanted one too. Not now! Dodges exhaust system has hindered fuel economy, Duramax's have left my hauling friend stranded in the States a couple of times and is presently in the shop. They have one a couple of years old that they finally painted a big lemon on the side of it. So I guess I will keep babying my 00 Dodge and wait. We are presently paying $5.90 a gallon up here for diesel so am very knowledgable about where I am going this year to show. Terri http://www.justabitfarms.ca/ |
|
| |
|
Member
Posts: 18
Location: Laurel Fork, Va from Arcadia, FL | I've got a "96 Dodge 2500 Auto 4x4 extended cab (Cummins) 165000 mi. I put a 4" exhaust, AFE intake and TST #8 torque plate on it. Total wgt of truck, loaded Sundowner 3H L/Q (w/2 horses) is just under 22,000 lbs. Getting 11.5 mpg (loaded) 16-18 mpg (truck alone) in the mountains of SW VA |
|
| |
|
Regular
Posts: 70
Location: Northern, CA | We run all Chevy's and GMC (2500s, 3500, 4500s) and use the Lucas additive. Has brought the mileage back up almost to where is was prior to the low sulfur diesel. Trucks are 2500s: 2002,2007; 3500: 2002; 4500s: 2004,2005. The older 2500 gets better mileage than the 2007, 22mpg not towing/20mpg towing. The '07 gets 20mpg/18mpg. The 4500's get 13mpg not towing and 10mpg towing. Don't know what the 3500 gets (don't like it, and never paid much attention to it). The 2002, 2500 had it's injectors replaced at 160,000 miles (courtesy of Chevy). Never used the additive until that happened. Mechanic suggested we start using it. Unfortunately, when the injectors were replaced, the mileage went down on that truck (was 24mpg, towing or not). |
|
| |
|
Expert
Posts: 3802
Location: Rocky Mount N.C. | Originally written by Too L Ranch on 2008-06-16 1:55 PM
We run all Chevy's and GMC (2500s, 3500, 4500s) and use the Lucas additive. Has brought the mileage back up almost to where is was prior to the low sulfur diesel. Trucks are 2500s: 2002,2007; 3500: 2002; 4500s: 2004,2005. The older 2500 gets better mileage than the 2007, 22mpg not towing/20mpg towing. The '07 gets 20mpg/18mpg. The 4500's get 13mpg not towing and 10mpg towing. Don't know what the 3500 gets (don't like it, and never paid much attention to it). The 2002, 2500 had it's injectors replaced at 160,000 miles (courtesy of Chevy). Never used the additive until that happened. Mechanic suggested we start using it. Unfortunately, when the injectors were replaced, the mileage went down on that truck (was 24mpg, towing or not). (was 24mpg, towing or not). [/QUOTE] What are you towing a Radio Flyer Wagon?? 
|
|
| |
|
Expert
Posts: 3853
Location: Vermont | Originally written by retento on 2008-06-16 2:20 PM Originally written by Too L Ranch on 2008-06-16 1:55 PM
We run all Chevy's and GMC (2500s, 3500, 4500s) and use the Lucas additive. Has brought the mileage back up almost to where is was prior to the low sulfur diesel. Trucks are 2500s: 2002,2007; 3500: 2002; 4500s: 2004,2005. The older 2500 gets better mileage than the 2007, 22mpg not towing/20mpg towing. The '07 gets 20mpg/18mpg. The 4500's get 13mpg not towing and 10mpg towing. Don't know what the 3500 gets (don't like it, and never paid much attention to it). The 2002, 2500 had it's injectors replaced at 160,000 miles (courtesy of Chevy). Never used the additive until that happened. Mechanic suggested we start using it. Unfortunately, when the injectors were replaced, the mileage went down on that truck (was 24mpg, towing or not). (was 24mpg, towing or not). [/QUOTE] What are you towing a Radio Flyer Wagon??
Actually I think he meant that he WAS BEING TOWED...and the combination works out to be 24MPG... Geez, I like GM products, but that number seems a bit STRETCHED... |
|
| |
|
Extreme Veteran
Posts: 346
| Well I aint gonna say it aint so but I have owned five Dmax's and only one of them reached 20 while not towing. 20 even running 80mph on interstate. It had a programmer on it and it also tore up the truck running hard while towing. Since then I had some others that I kept programmers on and tore them up too. The 5th one sits here without a programmer and gets 16-18 on highway running 80. Towing it gets 13. Its also a 2500. The truck above was a 3500. I have owned three 2500's and two 3500's. The Dmax without programmers (3500's) got anywhere from 6 to 11 pulling. Of course depending on how it was loaded and how fast you drive. All of these were owned since 03. The classic 07 I have now is a good truck. Best one so far. Shame it took four others to prove it. Also tip: figure the mileage on paper dont use the computer in the truck. I would say maybe its possible if you never go over 55. Towing or not. Big maybe. To the Orignal poster: The old dodges got better mileage than anything every produced in a pickup line. Dont even compare it to the old cummins. I know we had one here on the farm. 170k and it still got 20mpg. Sounded like crap, look like crap, and in some instances smelled like crap. Still ran good. You can be thankful you dont have a 6.0 in your GM. Had one of them too. Absolutely AWFUL on power and fuel. Thank you lord we didnt pull with it much. What a worthless engine for someone trying to pull. The old 5.7's would run circles around it for gassers. Good luck. Best thing to do is suck it up and live with it. Take it from me, I have tried alot of expensive add ons for the Dmax and none of them were worth the money in the end. |
|
| |
|
Regular
Posts: 70
Location: Northern, CA | The 2500's pull the G/N stock trailers, usually loaded with three horses & the cattle dogs, or with pairs (cows/calves). The 4500's pull the larger trailers or the 4 horse LQ. The reason the 2002 2500 stays in the stable IS the mileage. |
|
| |
|
Expert
Posts: 1416
Location: sc | Originally written by Too L Ranch on 2008-06-16 12:00 AM
The 2500's pull the G/N stock trailers, usually loaded with three horses & the cattle dogs, or with pairs (cows/calves). The 4500's pull the larger trailers or the 4 horse LQ. The reason the 2002 2500 stays in the stable IS the mileage. Youre going to sit there straight faced and tell us youre getting 18-20 mpg towing a GN with 3H while everyone else is getting that empty? That is the most ridiculous thing Ive ever heard. Do you tow at 25 mph? I cant decide if youre outright lying, or you honestly dont know how to figure mpg????????
Edited by chadsalt 2008-06-17 7:29 AM
|
|
| |
|
Regular
Posts: 54
Location: Danielsville,Ga. | does no good to lie,most people on this forum know what the typical mileage is for the big three diesels. I'm willing to think he just mis-calculated.,or he drank to much of the D-Max cool-aid.Hahaha |
|
| |
|
Veteran
Posts: 144
Location: Hickory Hills, IL | I guess I'm not so upset I never found my diesel truck when I was shopping (back in '06). I ended up with a 5.7 Hemi 2500 QC 4X4. I get 18-20 on the highway empy, 12 when pulling 3H trailer. Not too bad considering my gas is ~25% cheaper and I'm almost at the numbers the big Ds are pulling. My truck is stock with only a K&N filter. Granted, when pulling (and when empty) I drive with a soft foot- IfN I wanted to race I would be driving my Charger R/T! This is at ~65MPH. Granted, it is also mostly in Indiana where it is pretty much flat. Around town I only get 12 or so, but I hardly ever use my truck to run around town unless I'm off to the lumber yard! Cheers! ~Statzk
Edited by statzk 2008-06-17 5:12 PM
|
|
| |
|
Expert
Posts: 1416
Location: sc | Originally written by statzk on 2008-06-17 6:10 PM I guess I'm not so upset I never found my diesel truck when I was shopping (back in '06). I ended up with a 5.7 Hemi 2500 QC 4X4. I get 18-20 on the highway empy, 12 when pulling 3H trailer. Not too bad considering my gas is ~25% cheaper and I'm almost at the numbers the big Ds are pulling. My truck is stock with only a K&N filter. Granted, when pulling (and when empty) I drive with a soft foot- IfN I wanted to race I would be driving my Charger R/T! This is at ~65MPH. Granted, it is also mostly in Indiana where it is pretty much flat. Around town I only get 12 or so, but I hardly ever use my truck to run around town unless I'm off to the lumber yard! Cheers! ~Statzk Yep, the gas vs. diesel argument is all but dead. Unless you just have to have the power for the size of trailer, diesel is not bargain it used to be. Mpg are down over the years, (thanks horsepower wars), and price of diesel is way up. Mine too, sits in the driveway unless towing or I need the bed. I get 13 mpg towing the trailer in sig........got the same 13 towing with the Trailblazer running on 87 octane. Bought gas this morning, $3.75, last diesel was $4.80......damn it. |
|
| |
|
Expert
Posts: 3853
Location: Vermont | Originally written by chadsalt on 2008-06-17 6:40 PM Yep, the gas vs. diesel argument is all but dead. Unless you just have to have the power for the size of trailer, diesel is not bargain it used to be. Mpg are down over the years, (thanks horsepower wars), and price of diesel is way up. Mine too, sits in the driveway unless towing or I need the bed. I get 13 mpg towing the trailer in sig........got the same 13 towing with the Trailblazer running on 87 octane. Bought gas this morning, $3.75, last diesel was $4.80......damn it. NO IT ISN'T... Diesels Forever... I guess I'll just have to sell a share or two of BRK.B... http://quote.morningstar.com/Quote/Quote.aspx?ticker=BRK.B |
|
| |
|
Expert
Posts: 1416
Location: sc | Originally written by PaulChristenson on 2008-06-17 11:37 PM Originally written by chadsalt on 2008-06-17 6:40 PM Yep, the gas vs. diesel argument is all but dead. Unless you just have to have the power for the size of trailer, diesel is not bargain it used to be. Mpg are down over the years, (thanks horsepower wars), and price of diesel is way up. Mine too, sits in the driveway unless towing or I need the bed. I get 13 mpg towing the trailer in sig........got the same 13 towing with the Trailblazer running on 87 octane. Bought gas this morning, $3.75, last diesel was $4.80......damn it. NO IT ISN'T... Diesels Forever... I guess I'll just have to sell a share or two of BRK.B... http://quote.morningstar.com/Quote/Quote.aspx?ticker=BRK.B Somehow I knew there would be at least one............. |
|
| |
Poor Mileage on an '07 3500 Duramax
