Has anyone compared power and fuel economy between the 12V and 24V trucks? I just bought a 2002 24v dually,CTD,auto 4x4,4.10 gears. The best it will get is 13-15 MPG ,doesn't pull worth a darn.It is completely stock,with 13,000 miles,only work ever done on it was the computer was flashed under warranty,and normal maintenance.I changed oil and filter,fuel filter,air filter when i got it,3 weeks ago.The truck it supposed to replace is a bone stock 96 12v dually,4x4,auto 4.10 gears,identically optioned as the 2002 with 234,000 miles.It gets 16-19,and will run circles around the 2002 especially pulling the horse trailer.I'm talking the same load on the same hill,coming out of the farm,the 96 topped the hill at 48,the 02 at 36-37. I took the 2002 back to the Dodge dealer I bought it from and they say it is running correctly after a road test and putting it on the computer.Are all the 24v's this sorry,if so it's going down the road and I'll buy another 12V.

 

No they all don't run that bad.

If your stock 12v is out performing your 24v then your 24v is broke cause no stock 12v will out perform a stock 24v, that goes against the laws of physics...

Not sure what to tell you is broke but good luck with the dealer....Pete

 

Where are you located at? If close I would let you try my truck. You might want to check your tranny filter and bands.

 

Ditto Pete...something is wrong with your 24v.

12v's do tend to get about 10% better mileage tho. Much of that is they aren't running 235+ ponies.

 

Let alone, a 24v with 4.10 gears.

24v's love those gears and should pull whatever you want, even with the auto.

 

My '02 dually 4x4 6 speed gets 22 mpg unloaded and on the highway. Towing a 30 foot trailer, it gets 14-16 mpg. It has larger injectors, a timing box, and a bigger turbo. Making almost 400 horsepower, runs sweet. So take that for what it's worth.

 

Mine usually averages 13.40.... G/F likes to see black smoke too much I guess... Last trip unloaded it averaged 17.80... Haven't towed much lately so I don't have any fuel report on that...



Tony

 

Is that 22 mpg from the overhead computer, cause boxes throw off what the computer calculates you know.

 

My 3500 dualie gets 19.5 unloaded all the time and 20+ occasionally with 4.1's and 5 spd. I drive 65 max and use the cruise control all the time. As far as towing ...well the trailer better have one tough hitch or I'll yank it off.
Last week I pulled a big "dirt mover" for a friend. I hardly even stepped on the "fuel" pedal going up a 25 deg bank out of the creek we went through.

If you go 70+ then gas mpg goes down pretty fast even with less gear. These trucks are not sports cars so they push wind.
bentwings

 

my dually gets 13-14 towing a 50 ft 3 car trailer, and around 16-17 empthy, broterinlaw has a high out put 6spd and he geat s between 550 and 650 out of every tank,i used it to pull a trailer from florida to pa and i got 611 out of a tank towing,there are good and bad ones,sound s to me like you got a bad one,and if its that lazy i say injector pump ethy have good ones and bad onesget someone other than a dealer to go over it good and check every thing for you cause dealers dont fix things unless they are totally broke good luck with your quest