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What Kind of Fuel Milage Are You Getting From Your Cummins
I have owned a 1994 ,1997,1999,these were gas with 318 engine. got 15 to 16 mpg highway, so I herd about cummins with great fuel milage. so I picked up a new 2001 4x4 quad cab,stock rear put 47000 miles on it all highway ,in 30 months my fuel milage was the same from day one to trade for new 2003 truck. milage was 16 around town the little I drove it in town.highway was18.5 never change also truck was automatic.my 2001 was 215 hp, my new 2003 is 250 hp same everthing and my milage is 19.5 highway at speed of 65mph also same speed as 2001 just a little better.took truck to florida from ny last year and speed was 70 to 80 mph, watch mpg drop at 80 I got 17 t0 17.5 the cummins does not like high speeds for good fuel mpg.the 2003 is 13 months old and have 23000 on it now,still mpg is same from day one. cummins says no brake in needed so I guess thats why both 2001 and 2003 mpg was always the same from day one on.I here about people getting high 20s but I think they must not drive over 45 to 50 on highway . will be looking at the new ho with 325 hp next truck, would like to her some facts on mpg .
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What Kind of Fuel Milage Are You Getting From Your Cummins
I have 154K on a 01 4X longbox ,I get 14-16 towing a 8x18 enclosed loaded. 18-20 with no load and the tailgate down. I have a van-aken box in it, no other mods.Torqe converter went at 120K , other than that its a good worker, auto trans 355 rear
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What Kind of Fuel Milage Are You Getting From Your Cummins
The best I have done so far on my 2000 3/4ton auto 3.54 gear truck has been 18.6 mpg. I have never seen twenty even on the turnpike.
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What Kind of Fuel Milage Are You Getting From Your Cummins
2001.5 2500 4wd 6sp HO step II injectors and minor exhaust and intake mods. Have an Edge EZ but only run it as a boost fooler now.
74K to date, average 18.8 mpg so far.
I can get low 20's on extended runs if speed is kept below 75 mph. Low is usually low 16's during the winter running lots of 4wd.
Approx. 70% highway 30% local including DC/Baltimore traffic.
No complaints
Dave
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What Kind of Fuel Milage Are You Getting From Your Cummins
The neat thing about diesel engines is that you can't run them too lean. The more air you put through them, the cooler they run, and the more power you make. With this information, it should be easy to see that anything that makes the engine breathe better, such as larger exhaust and intakes and most "power packs" (like the Banks systems) not only increase power, but torque and mileage as well. The downside is that a given engine design has only so many "horsepower-hours" in it. When you increase the power of the engine, you decrease its life span commensurately. If you take a 300 hp engine that is designed to go 400k miles before a rebuild, and make it put out 600 hp, it will only live about 200k miles.
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What Kind of Fuel Milage Are You Getting From Your Cummins
In my opinion, the best option to obtain the best fuel economy is to try setting the cruise control on something between 45 & 50 mph. I set mine at about 47 mph as this seems to be the sweet spot for my truck. I realize that is a slow poke/poop along speed but I think you will be AMAZED at the mpg results. Remember........... as speed is doubled, resistance (drag) is squared. The point at which an optimum trade off between speed, drag, and fuel consumption is attained somewhere between 40 & 50 mph. At least in my experience it has.
A side benefit of driving this slow is that the stress level is nearly nonexistent as everyone else just zooms on by you.
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What Kind of Fuel Milage Are You Getting From Your Cummins
I agree. I do a lot of driving on the paved secondary roads in the area and get the best milage at about 45 and 5th. If I put the computer on current mph reading and work the hills I can do better than with the cruise.
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What Kind of Fuel Milage Are You Getting From Your Cummins
In Arizona, if you drove 47 mph, the DPS would give you a ticket for impeading traffic. On the weekends, the traffic can be bumper to bumper for 50 miles outside of the city limits. At that speed, 4-5 people will try to pass at one time and force on coming traffic off the shoulder. Most 2 lane high ways here are 65mph with 75mph on the interstate. Even people that drive the speed limit get flipped off all the time. The interstates that run through Phoenix are 65mph and most everyone drives 75+. The police say it it safer to drive with the traffic. There is a law that if you have 4 or more vehicles behind you and you are driving slower than the limit, you must pull over at the next available spot and let traffic pass.
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What Kind of Fuel Milage Are You Getting From Your Cummins
As for milage on my Cummins. My 1997 2500 4X4 3.54 gears 265/75-16 tires 5 speed. Custom gound AFC plate and fuel wheel tweaked. 600 flbs of torque. 22-23 mpg hwy if I don't hot rod it and 16-17 mpg in town. Towing a 7000# trailer in the mountains it gets around 15-16 mpg.
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What Kind of Fuel Milage Are You Getting From Your Cummins
I drive those speeds all the time. NEVER been issued a ticket. If 47 is too slow, they can pass. I do try to be courteous and allow other drivers by whenever possible. As for getting flipped off; just smile and wave. I think you've heard of the "Sticks and stones" addage. For the driver that feels motivated to take it beyond the flipping off. I'll just say that there would be 45 separated reasons I carry along that would possibly make that an idea better reconsidered. You might want to try it sometime. It is like beaming to another dimension. It is sooooo much better arriving at my destination relaxed and in good spirits as opposed to being wound tighter than a valve spring. Used to drive like that for years but finally came to the realization that life is too short to be P.O.'d and stressed out all the time.
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