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Simple ways to boost mileage

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Old Sep 7, 2020 | 04:52 PM
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Simple ways to boost mileage

I get 19 miles to the gallon on my 6.7. Just thought maybe some of you have done some things to your 6.7's to boost mileage, but not loose power when needed? Thanks in advance.
 
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Old Sep 7, 2020 | 05:09 PM
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Be thankful you are getting 19 MPG's with a truck that weighs close to 4 tons. Add 2,000 pounds to your car and see what millage you get. Just saying. .
 
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Old Sep 7, 2020 | 05:55 PM
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Depends how far down the rabbit hole you want to go. Narrower tires, lighter wheels, highway trade (vs all terrain tread), tonneau covers or caps can help sometimes but generally it’s driving habits that will get you the best results. Drive with a light foot, keep the engine out of boost as much as possible, let it lose speed on uphills, coast when you can, keep overall speed down to cu wind resistance, etc. driving like that can also stop the engine from building heat and force regen cycles more frequently so that could negate some of the gains.

19 MPG is good for the 6.7, this isn’t a vehicle you buy for the MPGs.
 
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Old Sep 7, 2020 | 06:05 PM
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Originally Posted by Pugga
Depends how far down the rabbit hole you want to go. Narrower tires, lighter wheels, highway trade (vs all terrain tread), tonneau covers or caps can help sometimes but generally it’s driving habits that will get you the best results. Drive with a light foot, keep the engine out of boost as much as possible, let it lose speed on uphills, coast when you can, keep overall speed down to cu wind resistance, etc. driving like that can also stop the engine from building heat and force regen cycles more frequently so that could negate some of the gains.

19 MPG is good for the 6.7, this isn’t a vehicle you buy for the MPGs.
I agree , I coaxed 19.9 out of mine , but that was with care on speed control , starts , boost , etc . When I drive normally (not towing ) , I get about 17 to 17.5 .
 
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Old Sep 7, 2020 | 07:50 PM
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Yeah I don't know how much more you can get but 19 is fabulous. I average anywhere from 14 to 16 mpg on summer fuel with a mix of hills, country roads, expressway and city driving. That's hand calculated though. The truck is 1 to 1.5 mpg lower.

On the winter blend fuel I get 13 to 14 or so. It drops because of the blended fuel like it did with my gassers but I also climb hills in four wheel drive. I have seen 18 or so on the highway on road trips and here on flat i90 to Rochester but that's all highway for me.

Besides, these engines don't like easy driving all the time with low EGTs. I have a routine now where I hammer the throttle in certain spots during my daily routine drive to work and coming home. Keeps the turbo vanes clean and the emissions flowing IMO.
 
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Old Sep 8, 2020 | 06:56 AM
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19 MPG is fantastic. 50-55 MPH is the range for best MPG on these trucks and highway tires. I'm thrilled when I get 16 MPG empty.
 
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Old Sep 8, 2020 | 07:04 AM
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I’ve never seen better than 16 out of a tank on both my 11 and 16. More of an average of 14 usually.
 
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Old Sep 8, 2020 | 01:05 PM
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It can be done

I took this picture on a 175 mile trip from NW Oklahoma back to the city. I was milking it, but was able to average over 20 mpg. The way I did it was to keep the pedal steady. You lose some speed on the uphills and gain on the downhills but the pedal stays constant. The cruise control/speed control kills your fuel mileage. Rarely did I get above the speed limit. Most times it was below by 5mph. I also avoid touching the brake pedal. Plan your stops. Got an intersection coming up? Coast to it rather than pressing the brake when you get there.



 
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Old Sep 8, 2020 | 01:06 PM
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Just reset and drove back from my mountain place, mostly down hill, drove it very softly (even let a Chevy pass me) and best I could get was 16.4 I typically average 15.1.
Pulled a 3000 lb camper, all highway and got 14.2, if I pull the same camper with my Wrangler JLU I get 7-8.
 
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Old Sep 8, 2020 | 02:30 PM
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Originally Posted by Braggs
I took this picture on a 175 mile trip from NW Oklahoma back to the city. I was milking it, but was able to average over 20 mpg. The way I did it was to keep the pedal steady. You lose some speed on the uphills and gain on the downhills but the pedal stays constant. The cruise control/speed control kills your fuel mileage. Rarely did I get above the speed limit. Most times it was below by 5mph. I also avoid touching the brake pedal. Plan your stops. Got an intersection coming up? Coast to it rather than pressing the brake when you get there.

Do you ever hand calculate to see how accurate the truck reading is?
 
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Old Sep 8, 2020 | 03:50 PM
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Originally Posted by Overkill2
Do you ever hand calculate to see how accurate the truck reading is?
Nope. But I also haven't been messing with the settings in the computer either. Everything is stock.
 
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Old Sep 8, 2020 | 04:52 PM
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Originally Posted by Braggs
Nope. But I also haven't been messing with the settings in the computer either. Everything is stock.
Hand Calculate for sure. the Dash display is quite variable. My truck is pretty consistent trip to trip, but is always overestimating my mpg by about 2 mpg. Precision vs Accuracy sort of thing.
 
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Old Sep 8, 2020 | 06:00 PM
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Originally Posted by mjs2011
Hand Calculate for sure. the Dash display is quite variable. My truck is pretty consistent trip to trip, but is always overestimating my mpg by about 2 mpg. Precision vs Accuracy sort of thing.

Mine is always showing less than what I am actually getting by around 1-1.5 mpg the display will constantly say 16.5 and when i fill up and calculation I am always closer to 18.18.5 that is all hwy speed around 68-72
 
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Old Sep 8, 2020 | 08:49 PM
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1. Use a 10W30 and do not use 15W40 motor oil
2. Use ExxonMobil Diesel Efficient fuel.
 
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Old Sep 8, 2020 | 08:54 PM
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Originally Posted by Braggs
Nope. But I also haven't been messing with the settings in the computer either. Everything is stock.
Okay. I'm stock also.

Originally Posted by mjs2011
Hand Calculate for sure. the Dash display is quite variable. My truck is pretty consistent trip to trip, but is always overestimating my mpg by about 2 mpg. Precision vs Accuracy sort of thing.
My truck MPGs is 1 to 1.5 less than hand calculated.

Originally Posted by osris
Mine is always showing less than what I am actually getting by around 1-1.5 mpg the display will constantly say 16.5 and when i fill up and calculation I am always closer to 18.18.5 that is all hwy speed around 68-72
Mine also. I have mixed driving so that is why I don't reach 18. But strictly highway I'll see it.
 
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