What kind of milage does a 600 get?


How does that compare with the old 12 valves?

Mine only has 1200 miles and I can't seem to get over 12.5.
everyone says it needs to break in and then I will get better but for
now this suckshttp://www.dieselplace.com/forum/smileys/smiley19.gif

For me 3500 miles on CTD 600, auto.


14 mpg town unloaded


18 mpg hwy unloaded 65-70 mph


11-12 mpg towing 6k trailer

I'm getting a solid 14.5mpg in mixed city/freeway driving with 3300 miles on the truck.

I'm new to the forum and just saw your 600 question. I bought mine last February and have about 12,000 miles on it. I've got the 2500 Quad Cab 4X4 with a camper shell. In town fighting traffic lights I'm getting 17.5 to 18.5 mpg. It varies quite a bit from tank to tank of fuel. Highway runs around 19.5 65 mph. Drops to about 16 at 80 mph. Pulling my small camper at 65 is still around 18 mpg. In the mountains west of Denver running slower (45 to 55) uphill and downhill I have had up to 22 mpg on a half a tank of fuel.


You gotta love these trucks.

Sorry, I forgot to tell you I have the 6 speed with the 3.73 rear end.

Roger600-


thanks for the 600 info. I didn't expect to see numbers that good. Probably because you've got the 6spd. An auto just doesn't get as good of milage. I like the 6 better anyway. If ever have one that is what will be behind it.

Blue600-


Do you have an auto or 6spd?

I have a 04.5 with the 6 spd and 3.73 gears. Mostly mixed mileage has been averaging in the 17s to 18s with a best of 19.3 and a low in the 16s. Haven't towed yet and won't until next summer on our trip to AK.http://www.dieselplace.com/forum/smileys/smiley1.gif





Larv

Blue600-


Do you have an auto or 6spd?





I have the auto. I didn't want it but then I wouldn't have been able to drive for the past 2 1/2 months due to rotator cuff and bicep surgery.

The new 600's should get in the area of 18 mpg. Towing should be in the 14 neighborhood. Obviously depending on weight, grade, wind, et al.


None of the new trucks will catch the MPG of the 12 valvers. Because of emission requirements, the timing has been so retarded, and the implimentation of EGR, have caused MPG to fall dramatically compared to the 12 valvers. 12 valvers get in the neighborhood of 24 mpg and about 16 towing. I have seen as high as 32 mpg and as low as 12 mpg. Any way you slice it, the 12valvers are the king of the mpg (for pickups anyway).

How many of you have gotten the TSB 18-037-04? Been making a big
difference says everyone who got it... I got it on mine and have
noticed a 1.5 mpg improvement on the overhead (currently reads 16.8 for
my around-town cycle). Haven't proven it by hand yet. For highway
mileage you need to stay below 75 mph... really 65-70 is where to be.



Agreed that the emissions standards are what screw everything up in
terms of mileage. If someone made a chip and EGR eliminator to improve
mileage, I would buy it...

Edge has a chip for the 600. 1st one i put on for a guy impressed the heck out of me.

The 600 has EGR?


Didn't know that.....hmmm....

No EGR on the Cummins. You can also attribute lower mileage figures to
higher power output.... a lot more than a 12V in stock form. 4x4 's no
longer have axle disconnect so the only means of disconnect now is the
transfer case. That means you are losing some mpg around town, always
taking the front driveshaft and the rest up to speed during every
acceleration. I wonder if the 2WD 3rd Gen trucks have better a
significantly better mileage around town?


Edited by: hoot

I wonder why Dodge didn't put locking hubs on these trucks.

I didn't really think it the Cummins has EGR. Cummins uses that extra pulse of fuel to get around the need for EGR. <?:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />


I cannot imagine that an engine as capable as the 600 expending any notable amount of power as far as the resistance found in the always connected front end and the spinning up of the front driveshaft as related to fuel economy. I imagine that equally equipped trucks are within about 1mpg when comparing 2wd's to 4wd's. I would think the key difference is the 4x4 is heavier, thus usually having a slightly lower towing capacity. AND the 4x4 sits higher, the windshield rake is slightly more vertical; true, there is a marginal amount of rolling resistance in that big front axle; more air under the vehicle creates more drag---just as significant as anything else.


My guess is a hub is just one more part to break. Last I checked the Dodge 2500/3500’s had open front differentials and did not offer any kind of front traction aiding diff therefore there is no need for hubs. Jeep did away with its disconnect years ago and does not use hubs on its TJs because they have open front diffs. (Those are part-time, pneumatic lockers on the Rubicon.) Granted hubs or disconnects are nice if you run a full-time traction-aiding differential, but most people won't do that. Heck it seems to me most folks don't know there is a difference between an open differential and limited slip, let alone what a locker is.


Kind of sucks that you pay big money for these new trucks, get the 4x4, with the big ol’ “4x4” or “Off Road” sticker on the side of it and the BEST you get from the factory is three wheel drive…. Power Wagons and Jeep Rubicons are a different story.


Back on topic: two co-workers have Dodges. One has the 555, 6-speed, 4x4, 1-ton dually, claims a consistent 17+mpg around town and touching 20mpg on the road, claimed switching to Amsoil gave him a 1mpg gain. Other co-worker has a 600, auto, 4x4, 3/4-ton, 33-inch tires and had dealer installed “100 horsepower” injectors since day-one, gets about 16 around town and the power is impressive.

Mine's a 4x2 and I get about 16.8 on my around town driving, at least indicated. The mileage has been about the same as my old 6.5 was. I was hoping for better. Since I bought the thing I haven't really taken a good long highway trip to tell what the mileage there is. When I bought it and drove it back from Texas I was getting 14.9. I was also going a solid 85 or so (I was in a hurry) so I can't say I was too terribly surprised. When I get on a trip where I can just set the cruise at 70 or so and see what happens, I'm hoping for 20 or so. Still nowhere near the 12-valve, and I don't think it has as much to do with the increased power output as it does with the emissions regulations.


FASTOYS, does that Edge chip improve mileage as well and if so is it undetectable? I'm plenty happy with the power my truck has.

Havent got feedback from him yet on mileage but will try and call him. Easy install. NEVER GOT ENOUGH POWER THOUGH!http://www.dieselplace.com/forum/smileys/smiley36.gif

Blue600-


People who want hubs represent such a small part of the pickup market compared to people who just want convinience. Although the pickup would have a better 4wd, it just wouldn't be worth the trouble for Dodge or Chevy for that matter. Ford is the only one who even still offers manual hubs.

Thanks FASTOYS, let us know what he says.

Blue600-


People who want hubs represent such a small part of the pickup market compared to people who just want convinience. Although the pickup would have a better 4wd, it just wouldn't be worth the trouble for Dodge or Chevy for that matter. Ford is the only one who even still offers manual hubs.








I came from a Ford, that's why I was asking.

Tdupuos, He said before he was getting steady 17-18 and now is getting steady 24-25 at 70mph! This is what he told me on the phone tonight going by his DIC . His truck is a 600 Dodge auto " 2 wheel drive " ! He said that with the strong wind at his back today he got like 29mpg but that was with a strong wind. Maybe the DIC reads wrong witht the Edge chip but this guy is just plum tickled to death with his truck !!

I hate to tell you this dude, but he is in no way getting 29 MPG! I doubt he's even getting 24-25 MPG. The DIC displays calculated MPG, not measured MPG. The factors that the PCM uses are throttle position, engine RPM, time, vehicle speed, calculated load, and on and on. The problem is that when the truck has a modifier on it, the 'known' operation of the engine now becomes an unknown. At least to the computer it does. So it sees lower throttle position as less fuel usage and higher MPG. That's not the case. The fuel curves are re-mapped for efficiency and that helps MPG, but not to the extent that the DIC reflects.


As an example, my truck gets 16-18 MPG as calculated by hand. It's been that way for a long, long time. My overhead console reads a consistant 24.5 mpg. Except when the wife drives, then it reads 25.5 mpg (I don't know why, she drives worse than I do). Nevertheless, please note the discrepancy between the two. This is caused by the modifications I have made to the truck. It has been that way since I put one of the first Edge boxes on it.


I hate to burst your buddies' bubble, but that's the way the machine works. Of course, you don't have to tell him and he can be happy with his indicated MPG. Just don't let him calculate it by hand.

What does just the juice add if any then to mpg?

Because the Juice advances timing over stock, the engine is more efficient. But only by about 1 to 2 mpg at the sacrifice of emmsions. So your buddy should see that much in actual mpg increase. But not much more.


The problem with the console MPG is that the engine is pre-determined to use so much fuel for a given throttle position. But now, you are using a lower throttle position for the same amount of fuel (due to remapping of the fuel and timing curves). The console MPG interprets this new throttle position as the engine using less fuel for a given amount of time. So it raises MPG astronomically. In actuality, the engine is using the same amount of fueling as before, just at a lower foot position.

I'll weigh in on mileage one more time. My truck is the 2004.5, 600 with the six speed manual tranny and 3.73 gears. Everything is totally stock and I have about 14,000 miles on it now. Why anybody needs more power than stock, I can't imagine.


I went elk hunting and did a substantial amount of low range four wheeling mostly because of big rock ledges and mud. The only thing I would change is to trash the BFG Road Handlers in exchange for the All Terrain, T/A, KO's. Road handlers filled up too quick and I did alot of skating.


Pulling my camper back (weighs around 3500 lbs) I got 15.7 mpg from Craig, CO to Denver. That is going over Rabbit Ears Pass at around 13,000 feet in elevation and travelling through Eisenhower Tunnel at about the same elevation.


Two days later I had to go back to Maybell, CO to pick up meat from a processor. Maybell is about 30 miles past Craig on the way to Utah. I filled up in Denver and did a round trip running empty last Saturday. I ran a steady 65 mph on cruise control when I could. I hit 70 a few times and was down for speed zones. The console showed 22.7 mpg. I put about another 80 miles on that tank and just filled up. The console showed 21.6 when I filled up. I had 347.2 miles on 25.01 gals. My calculator said that was 21.88 mpg. My experience with the console mpg is that it is within .5 mpg either way, probably depending how high up in the neck you fill.


I think the trailer towing helped alot. The more you work these 600s, the better they run.

Roger,


Please don't take this the wrong way, but, I think you might want to double check that math... 347miles, with 25 gallons = 13.88 mpg. I would go out and buy a Dodge tonight if they are getting low 20's for mpg... Please let it be true! http://www.dieselplace.com/forum/smileys/smiley1.gif


Hookem

Sorry, it was a typo I had 547.2 miles. 220 something each way.


My truck is a 2500, quad cab, short bed with a Leer shell.

Oh, before you tell me 220 miles each way isn't 547, I had some mileage in town that brought the average down.


Better go buy a Dodge, those Duramax's can't go where I did without BIG$ on a lift kit.

My last two tanks were 17.43 and 1741... 2004.5 Quadcab,4x4 , dually, 4:10 gears...

I just got back two hours ago from 2500 miles of driving, mostly
towing. Did a 900 mile run to Texas with my old 3/4-ton Chevy truck on
back. Got an indicated 14 mpg, with the cruise set @ 70. Then got 15
mpg indicated flying (85-105 no trailer) to San Antonio, 17.1 mpg
indicated towing a 1-ton Chevy dually @ 55 mph to Dallas, and 15.5 mpg
indicated towing the trailer empty back to Indiana @ 80 mph. My
hand-calculated mileage is a consistent 1 mpg lower than indicated.



I now have a total of 6000 vehicle miles, and I find the more I drive
the better the mileage gets. The towing definitely helped it. Tomorrow
I tow the trailer (empty) back to New York and will be driving around
for a week there before coming back. We'll see what the mileage is like
then.