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Re: TOWING WITH MY NEW 2003 5.9 DUALLY
[Re: 451Mopar]
#1096730
10/18/11 11:23 PM
10/18/11 11:23 PM
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Joined: Jul 2010
Posts: 2,091
Delray beach, Florida
Performance Only
top fuel
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top fuel
Joined: Jul 2010
Posts: 2,091
Delray beach, Florida
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Quote:
Quote:
well thanx guys.the truck did come with the smarty programmer.ill try it out soon.i have moved to colorado and i left truck there, 1 less thing to move next week,lol. now i get the extra fuel tank in the bed.im looking into 1 of them.every 200 miles i had to stop for fuel.i dont like being down below half tank.
I have the digital propane injection. It does help increase mialage and extends the range of the truck.
I just wish I had gotten a larger propane tank.
I use about 1/2-gallon of propane to 1-gallon Diesel, and my propane tank (19-gallon, but holds 15-gallons plus expansion space) so it needs re-filled every time I fill up with diesel.
The problem is finding a place to re-fill the propane at a reasonable price. The propane place I goto is $2.50/gallon, but the price at the Flying J truck stop is $3.20/gallon.
so what kind of mileage do you get with that setup? how much does it increase the range, assuming 30+ gals of diesel and 15 gallons of propane. just wondering if it's worth it.
machine shop owner and engine builder
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Re: TOWING WITH MY NEW 2003 5.9 DUALLY
[Re: V10nacuda]
#1096731
10/18/11 11:52 PM
10/18/11 11:52 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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I run a 95 diesel dually 2 W/D with a 6 speed stick and with my 43' trailer I get 18 mpg once I hit the Expressway... city traffic and lights kills my mileage... my trailer has a real small front to it(custom) so I'm not dragging a wall behind me... also I try to keep my revs at 2000 to 2200 which is 65 mph or a bit higher... it has the 4.10 gear but I did put the tallest tire on it that would fit 
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Re: TOWING WITH MY NEW 2003 5.9 DUALLY
[Re: 2QUICK4U]
#1096732
10/19/11 02:40 AM
10/19/11 02:40 AM
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Joined: Aug 2003
Posts: 43,163
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,163
Bend,OR USA
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Is yours a standard 5.9 or a high output? I've heard from several other TCD Dodge Ram truck owners say that the 2003 get the best mileage and power of the stock trucks  I have a freind who had a 2005 3500 4 WHD dually that towed the same trailer as I do,24 Ft. Pace Shadow and he uses a 12.5 ft overhead camper and he got better milage than me towing just my trailer, our trailer are probbally real close to the same weight with the cars in them. My truck is a 2006 3500 4 WHD four door (his is to) single wheel with the same gears as his so I tend to believe the other drivers on the earleir trucks getting better mileage, try different power settings on your box and see what that does. I also agree on the speed and wind affecting the mileage  Slower is better when it comes to burning fuel  I've got as good as 14.5 MPG towing the car trailer, I have a 34 Ft fithwheel camping trailer, it is really tall and the best milage I've got with it was right at 12 MPG going 60 MPG or slower on the first trip with it, the speed limit in Oregon is 55 MPH no matter what  I've gotten worst mileage later going faster into a head wind coming back from Arkansas this spring, 8.3 based on filling the tanks all the way up and the speedometer reading The overhead console fuel milegage lies don't believe it 
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: TOWING WITH MY NEW 2003 5.9 DUALLY
[Re: Cab_Burge]
#1096733
10/19/11 09:17 AM
10/19/11 09:17 AM
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Joined: Jul 2006
Posts: 9,366
Lehigh Acres, Florida
rickstershemi
master
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master
Joined: Jul 2006
Posts: 9,366
Lehigh Acres, Florida
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07 GMC Duramax/Allison 3500 Dually 4x4 L/B C/C got 16mpg on my trip out to Texas towing our open trailer and the same on the trip back with the Valiant loaded.....we got 14mpg towing Jimmy's 32' Enclosed loaded with his Dart when we took it up to Tony's to get wired up.....I got anywhere from 7-10mpg towing the 50' L/Q loaded. All trips are normally at 70mph interstate speeds. It averages between 16-17mpg with no trailer on the interstate and 15mpg in mixed city driving...for the huge beast that it is, I'm very pleased.....  Rickster
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Re: TOWING WITH MY NEW 2003 5.9 DUALLY
[Re: Performance Only]
#1096735
10/19/11 12:43 PM
10/19/11 12:43 PM
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Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar
master
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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Quote:
Quote:
Quote:
well thanx guys.the truck did come with the smarty programmer.ill try it out soon.i have moved to colorado and i left truck there, 1 less thing to move next week,lol. now i get the extra fuel tank in the bed.im looking into 1 of them.every 200 miles i had to stop for fuel.i dont like being down below half tank.
I have the digital propane injection. It does help increase mialage and extends the range of the truck.
I just wish I had gotten a larger propane tank.
I use about 1/2-gallon of propane to 1-gallon Diesel, and my propane tank (19-gallon, but holds 15-gallons plus expansion space) so it needs re-filled every time I fill up with diesel.
The problem is finding a place to re-fill the propane at a reasonable price. The propane place I goto is $2.50/gallon, but the price at the Flying J truck stop is $3.20/gallon.
so what kind of mileage do you get with that setup? how much does it increase the range, assuming 30+ gals of diesel and 15 gallons of propane. just wondering if it's worth it.
I found some deals on the parts when I did mine and it was about $1,500. The fuel savings is a balancing act. For me it seems 50% propane works pretty well. If I turn up the propane higher I do use less Diesel, but way more propane.
For me I get about the same mialage increase as I would with the same amount of Diesel, but the propane costs less. So Normal Highway unloaded I go from about 20 MPG to 30 MPG. This would be 1 gallon diesel + 1/2 gallon propane.
Right now the savings is about $0.02/mile so it would take 75,000+ miles for the system to pay for itself. The propane does make the diesel burn quicker with higher cylinder pressures, so part of my conversion was head studs. The more complete burn is supposed to reduce emissions? and the extra fueling adds power. The extra fuel in the propane tank extends the trucks range by a 1/3. Might be able to go 900 miles highway/unloaded.
I have not towed long distances with the propane, maybe 100 miles one way and back, but the mileage increase looked good from 12 to 20 MPG with the same 50% propane setting, but I have not verified the exact amount of propane used. It seemed to use more propane, but it may have still been around the same proportion?
Here is the article Mopar Muscle did on the propane injection system:
http://www.moparmusclemagazine.com/techa...on/viewall.html
The one issue is Superchips/MSD does not list the DPI system anymore. I think they are still for sale from some places.
Bullydog has a simpler system, but it is just as expensive.
Finding the correct propane tank is not easy. Check with your local propane dealers as they may have some. If not you may have to order directly from Manchester or Sleegers.
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