Fuel Mileage on 05 CTD
#1
09-22-2005, 02:27 AM
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#2
09-22-2005, 02:43 PM
RE: Fuel Mileage on 05 CTD
I can't answer your question about the specific comparison betwen the '05 and the pre-04.5's but I can tell you that I'm doing better than you on fuel consumption. Are you running the 4.10 gears or is a lot of your driving city driving?
Mine's a 2005, 4X4, auto, QC, short bed with 3.73's. Here are some MPG samples:
1. Average unloaded interstate driving (average speed ~70 MPH): 18.5 MPG
2. Average on 400 mile trip pulling 6000 lb trailer and Jeep and carrying 1500 lb pickup camper: 13.1 MPG
3. Best trip (100 miles unloaded, average speed ~60 MPH): 21.1 MPG
4. Best trip with camper load (~1500 lbs, average speed ~55 MPH): 19.9 MPG
I have about 2000 miles on mine and have gotten my best MPG when running Drew's blend of 32 oz. Power Service Diesel Kleen and 8 oz. Marvel's Mystery Oil. With the camper load, I got 2.2 MPG better running this mixture.
Mine's a 2005, 4X4, auto, QC, short bed with 3.73's. Here are some MPG samples:
1. Average unloaded interstate driving (average speed ~70 MPH): 18.5 MPG
2. Average on 400 mile trip pulling 6000 lb trailer and Jeep and carrying 1500 lb pickup camper: 13.1 MPG
3. Best trip (100 miles unloaded, average speed ~60 MPH): 21.1 MPG
4. Best trip with camper load (~1500 lbs, average speed ~55 MPH): 19.9 MPG
I have about 2000 miles on mine and have gotten my best MPG when running Drew's blend of 32 oz. Power Service Diesel Kleen and 8 oz. Marvel's Mystery Oil. With the camper load, I got 2.2 MPG better running this mixture.
#3
09-22-2005, 10:16 PM
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#4
09-23-2005, 01:46 PM
RE: Fuel Mileage on 05 CTD
when I pulled my truck off the lot my mouth about went through the floor board when I noticed I was only getting 13 mpg. however, now 22500 miles later I average about 18.5 now. I can get over 20 if I keep my foot out of it. but wheres the fun in that
the best things you can do right now to get better fuel mileage is to pull something heavy and work the engine as hard as you can. this will increase cylinder pressures causeing the rings to properly seat faster, help wear bearings in and so on. When the engine is delivered from Cummins to DC it is broken in in terms of initial valve lash and initial parts wear. but there is still alot to do.
one thing I have noticed is after 18000 my mileage started getter better, then I also noticed better fuel mileage after pulling a trailer loaded with 8k and pushing the engine as hard as I could, that was last month. (basicaly full throttle up hills, that was fun[8D])
with those having an auto and 3.73's you'll get better mileage that what I'm getting. I have the NV5600 and 4.10's
one thing that everyone needs to keep in mine when it comes to fuel economy. the more power the engine is capable of produceing, the more fuel you are going to use. the days to the CTD averaging over 20mpg are pretty much long gone. some of the '90's 250hp trucks easily got 20mpg. but the new common rail engines will be lucky to see over 20.
the best things you can do right now to get better fuel mileage is to pull something heavy and work the engine as hard as you can. this will increase cylinder pressures causeing the rings to properly seat faster, help wear bearings in and so on. When the engine is delivered from Cummins to DC it is broken in in terms of initial valve lash and initial parts wear. but there is still alot to do.
one thing I have noticed is after 18000 my mileage started getter better, then I also noticed better fuel mileage after pulling a trailer loaded with 8k and pushing the engine as hard as I could, that was last month. (basicaly full throttle up hills, that was fun[8D])
with those having an auto and 3.73's you'll get better mileage that what I'm getting. I have the NV5600 and 4.10's
one thing that everyone needs to keep in mine when it comes to fuel economy. the more power the engine is capable of produceing, the more fuel you are going to use. the days to the CTD averaging over 20mpg are pretty much long gone. some of the '90's 250hp trucks easily got 20mpg. but the new common rail engines will be lucky to see over 20.
#5
09-28-2005, 05:39 AM
RE: Fuel Mileage on 05 CTD
I have a 2005 RAM 2500 CTD 4x4 w/3.73 gears. I just passed 4500k. I am getting about 18.5mpg @ 70mph and 21.0mpg @ 75mph, unloaded and pulling a 38ft 5th wheel, I average about 14.5mpg @ 65mph on the flats, 9.5mpg uphill. I added a AFE stage II cold air intake and a DR. Performance Stage II chip. Before these upgrades, I noticed a conciderable decrease in fuel mileage. I'm very pleased with the Air intake and chip upgrades, especially pulling a "BEAST" of a 5th wheel, and I wouldn't change a thing.
My Buddy has a 2003 Ford PSD 6.0 and he can't even come close to the fuel mileage my Dodge CTD averages. Even pulling an equally sized 5th wheel.
Try going with the cold air intake! Just that upgrade should increase the fuel mileage 1 -2 MPG.
Just my $.02!!!!!!!!!!
My Buddy has a 2003 Ford PSD 6.0 and he can't even come close to the fuel mileage my Dodge CTD averages. Even pulling an equally sized 5th wheel.
Try going with the cold air intake! Just that upgrade should increase the fuel mileage 1 -2 MPG.
Just my $.02!!!!!!!!!!
#6
10-07-2005, 06:37 PM
Record Breaker
RE: Fuel Mileage on 05 CTD
ORIGINAL: Drew
when I pulled my truck off the lot my mouth about went through the floor board when I noticed I was only getting 13 mpg. however, now 22500 miles later I average about 18.5 now. I can get over 20 if I keep my foot out of it. but wheres the fun in that
the best things you can do right now to get better fuel mileage is to pull something heavy and work the engine as hard as you can. this will increase cylinder pressures causeing the rings to properly seat faster, help wear bearings in and so on. When the engine is delivered from Cummins to DC it is broken in in terms of initial valve lash and initial parts wear. but there is still alot to do.
one thing I have noticed is after 18000 my mileage started getter better, then I also noticed better fuel mileage after pulling a trailer loaded with 8k and pushing the engine as hard as I could, that was last month. (basicaly full throttle up hills, that was fun[8D])
with those having an auto and 3.73's you'll get better mileage that what I'm getting. I have the NV5600 and 4.10's
one thing that everyone needs to keep in mine when it comes to fuel economy. the more power the engine is capable of produceing, the more fuel you are going to use. the days to the CTD averaging over 20mpg are pretty much long gone. some of the '90's 250hp trucks easily got 20mpg. but the new common rail engines will be lucky to see over 20.
when I pulled my truck off the lot my mouth about went through the floor board when I noticed I was only getting 13 mpg. however, now 22500 miles later I average about 18.5 now. I can get over 20 if I keep my foot out of it. but wheres the fun in that
the best things you can do right now to get better fuel mileage is to pull something heavy and work the engine as hard as you can. this will increase cylinder pressures causeing the rings to properly seat faster, help wear bearings in and so on. When the engine is delivered from Cummins to DC it is broken in in terms of initial valve lash and initial parts wear. but there is still alot to do.
one thing I have noticed is after 18000 my mileage started getter better, then I also noticed better fuel mileage after pulling a trailer loaded with 8k and pushing the engine as hard as I could, that was last month. (basicaly full throttle up hills, that was fun[8D])
with those having an auto and 3.73's you'll get better mileage that what I'm getting. I have the NV5600 and 4.10's
one thing that everyone needs to keep in mine when it comes to fuel economy. the more power the engine is capable of produceing, the more fuel you are going to use. the days to the CTD averaging over 20mpg are pretty much long gone. some of the '90's 250hp trucks easily got 20mpg. but the new common rail engines will be lucky to see over 20.
#7
10-08-2005, 12:24 AM
RE: Fuel Mileage on 05 CTD
starting in 05, when dodge went away from the NV5600 tranny to the G-56 the overall gearing in the G-56 is higher. so even if you have a 3.73 rear rear axel with the G-56, the RPM's are a bit higher than that of the NV5600 and 4.10's.
the auto right now is the only transmission dodge will mate with the 4.10 rear axel. the G-56 would rev the engine to high in order to maintain highway speeds.
now, with the engine, the torque and horsepower curves on the newer common rail engines is alot different than that of the older models. older 12v and some 24v engines had a very flat torque curve as compared to later 24v and the common rail wich has a more rounded curve, but still not like the Duramax of the PowerJoke which hits late and drops quick. When Cummins put on the 24v heads that made the engine be able to rev quicker, however what has killed fuel mileage the most is the increase in power. the more powerfull the engine the more fuel it takes to create that power.
yes, the new common rail engines do like to be wound out and are capable of living at 3200rpm under load, but if they are geared like the old 24v and 12v engines were the fuel mileage would be better sincec the DANA 80's used a 3.54 rear axel ratio or a 4.10. the AAM axels use either a 3.73 or a 4.10. this is mainly for pulling since the 4.10 can pull 200# more then the 3.73's
the auto right now is the only transmission dodge will mate with the 4.10 rear axel. the G-56 would rev the engine to high in order to maintain highway speeds.
now, with the engine, the torque and horsepower curves on the newer common rail engines is alot different than that of the older models. older 12v and some 24v engines had a very flat torque curve as compared to later 24v and the common rail wich has a more rounded curve, but still not like the Duramax of the PowerJoke which hits late and drops quick. When Cummins put on the 24v heads that made the engine be able to rev quicker, however what has killed fuel mileage the most is the increase in power. the more powerfull the engine the more fuel it takes to create that power.
yes, the new common rail engines do like to be wound out and are capable of living at 3200rpm under load, but if they are geared like the old 24v and 12v engines were the fuel mileage would be better sincec the DANA 80's used a 3.54 rear axel ratio or a 4.10. the AAM axels use either a 3.73 or a 4.10. this is mainly for pulling since the 4.10 can pull 200# more then the 3.73's
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#8
10-08-2005, 03:42 AM
Record Breaker
RE: Fuel Mileage on 05 CTD
Okay, so I was partly right about the gear ratios not helping the drop in fuel economy. Thank you for explaining that to me. What would be nice is if they would offer a diesel that was focused on fuel economy for the people who want the diesel for its superior reliability and better fuel economy and don't want all the extra horsepower and torque.
#9
10-10-2005, 06:03 PM
RE: Fuel Mileage on 05 CTD
ORIGINAL: 97 3.5 Intrepid
Okay, so I was partly right about the gear ratios not helping the drop in fuel economy. Thank you for explaining that to me. What would be nice is if they would offer a diesel that was focused on fuel economy for the people who want the diesel for its superior reliability and better fuel economy and don't want all the extra horsepower and torque.
Okay, so I was partly right about the gear ratios not helping the drop in fuel economy. Thank you for explaining that to me. What would be nice is if they would offer a diesel that was focused on fuel economy for the people who want the diesel for its superior reliability and better fuel economy and don't want all the extra horsepower and torque.
#10
10-11-2005, 10:56 AM
RE: Fuel Mileage on 05 CTD
ORIGINAL: Mudinyeri
I think they call that the Jeep Liberty.
ORIGINAL: 97 3.5 Intrepid
Okay, so I was partly right about the gear ratios not helping the drop in fuel economy. Thank you for explaining that to me. What would be nice is if they would offer a diesel that was focused on fuel economy for the people who want the diesel for its superior reliability and better fuel economy and don't want all the extra horsepower and torque.
Okay, so I was partly right about the gear ratios not helping the drop in fuel economy. Thank you for explaining that to me. What would be nice is if they would offer a diesel that was focused on fuel economy for the people who want the diesel for its superior reliability and better fuel economy and don't want all the extra horsepower and torque.
HA HA HA
unfortunately the Jeep diesel is a MB diesel.
I am hearing word that there is a 3.54 rear end or something close to that for the AAM axels.