What to do about UNACCEPTABLE fuel mileage?
#107
10-01-2017, 04:08 PM
Well let me first say that I absolutely love my new truck. It is a CCSB 6.7 KR. Love the interior, the ride, the power, the looks. Actually I pretty much love everything about this truck even the stereo which gets so many complaints on here, and then there's the fuel mileage👎👎👎.
At first it seemed it would be pretty good because on my first tank which was 80% around town it averaged 14.5 which was a little better than both of my previous cummins'. Then came the first trip I was hoping for 18 but pretty much expecting 17 at 70mph. Well how about 13.2😡😡😡. I couldn't believe it and since then have tested multiple other highway 70-75 mph trips with the best one being 14.9.
I talked with the the service advisor today who said bring it in they would re flash it but other than that not much they could do. My reply was that if it doesn't improve I would need to speak with a ford area rep because I didn't spend 8500 for the diesel to get the same fuel economy as the gasser.
Any suggestions and is anyone else seeing this bad of highway mileage or am I correct in thinking that this is unacceptable???
At first it seemed it would be pretty good because on my first tank which was 80% around town it averaged 14.5 which was a little better than both of my previous cummins'. Then came the first trip I was hoping for 18 but pretty much expecting 17 at 70mph. Well how about 13.2😡😡😡. I couldn't believe it and since then have tested multiple other highway 70-75 mph trips with the best one being 14.9.
I talked with the the service advisor today who said bring it in they would re flash it but other than that not much they could do. My reply was that if it doesn't improve I would need to speak with a ford area rep because I didn't spend 8500 for the diesel to get the same fuel economy as the gasser.
Any suggestions and is anyone else seeing this bad of highway mileage or am I correct in thinking that this is unacceptable???
#108
10-03-2017, 04:07 PM
Lead Driver
First tank in a while without towing. F-250 Lariat Ultimate, 6.7, CCSB, 3.55, 20" Michelins, FX4. I tend to drive kind of fast and like to feel the power of the 6.7 when getting up to speed. I have gotten a little over 20 on a straight highway run. The lifetime average includes well over 10k miles towing a 24' gooseneck (4500lbs empty). I ain't complaining.
#109
10-03-2017, 06:39 PM
for real life mileage calcs check out fuelly.com
filter for 2017 F250 - http://www.fuelly.com/car/ford/f-250_super_duty/2017
I have kept track of my fuel milage with this app for my past three trucks - 2 F150s 4x4's and now my F250.
Currently averaging 16.6 mpg over 14,000+ miles. This is actual mpg based on the fuel pump and miles driven not the truck computer which is always a little higher.
You can filter on specific truck builds.
My '09 F150 got about 14.9 if I recall correctly and my '13 got about 15.1
filter for 2017 F250 - http://www.fuelly.com/car/ford/f-250_super_duty/2017
I have kept track of my fuel milage with this app for my past three trucks - 2 F150s 4x4's and now my F250.
Currently averaging 16.6 mpg over 14,000+ miles. This is actual mpg based on the fuel pump and miles driven not the truck computer which is always a little higher.
You can filter on specific truck builds.
My '09 F150 got about 14.9 if I recall correctly and my '13 got about 15.1
#110
10-03-2017, 06:49 PM
Cargo Master
for real life mileage calcs check out fuelly.com
filter for 2017 F250 - 2017 Ford F-250 Super Duty MPG - Actual MPG from 98 2017 Ford F-250 Super Duty owners
filter for 2017 F250 - 2017 Ford F-250 Super Duty MPG - Actual MPG from 98 2017 Ford F-250 Super Duty owners
#112
10-04-2017, 10:37 AM
Can you also record hours per tank there in order to determine average MPH/tank? Can you insert notes stating if a tank or five were spent mile-munching on the superslab versus in-town stop-n-go? And based on your averages, can it forecast how many miles you may have on your truck 17 months from now? If no, I'll stick with my Excel spreadsheet and enter that data at home on my desktop PC while enjoying a scotch on the rocks.
Notes you can add - Also allows you to set city vs Hwy percentage per data entry
No forecasting
But both of the no's above can be submitted to the programmers to see if they can add that to future updates. They are very willing to add user requests.
#113
10-04-2017, 01:26 PM
Since i have "enabled" the DPF Filter % display on my dash display, I'm noticing that my the DPF filter seems to fill up A LOT.
Last night i drove 94 miles round trip (the 1st 47 mile segment was interstate w/ a little bit of heavy slow traffic and the return 47 miles was later in the evening w/ rapid moving interstate driving).
when i started my trip the DPF was 70% full, it cleaned itself during the 47 mile drive, upon return the DPF was 70% full AGAIN.
My question - does the filter really fill that quickly?
I suspect this could be contributing to my (**** poor) MPG!
Last night i drove 94 miles round trip (the 1st 47 mile segment was interstate w/ a little bit of heavy slow traffic and the return 47 miles was later in the evening w/ rapid moving interstate driving).
when i started my trip the DPF was 70% full, it cleaned itself during the 47 mile drive, upon return the DPF was 70% full AGAIN.
My question - does the filter really fill that quickly?
I suspect this could be contributing to my (**** poor) MPG!
#114
10-04-2017, 01:40 PM
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#115
10-04-2017, 02:07 PM
Cargo Master
#116
10-04-2017, 02:44 PM
but on the return 47M loop, i was back to 65% if not 70%
#117
10-04-2017, 03:03 PM
Can you also record hours per tank there in order to determine average MPH/tank? Can you insert notes stating if a tank or five were spent mile-munching on the superslab versus in-town stop-n-go? And based on your averages, can it forecast how many miles you may have on your truck 17 months from now? If no, I'll stick with my Excel spreadsheet and enter that data at home on my desktop PC while enjoying a scotch on the rocks.
#118
10-11-2017, 02:10 PM
Fleet Mechanic
#119
10-11-2017, 03:59 PM
GAS REALLY 15???
I owned 6.2 in this config 4x4 LBCC 18 wheels. NEVER EVER DID I get 15 or 14 or 13 More like 9 to 12. This is in San Diego area. Towing was 7 to 8.
My life time average for 2012 6.7 .13.x. That's it, Not GREAT but that is the number. It better then a gasser.
Yes I do tow heavy and the truck is a brick. The best mpg was in WY running at 40 mph at night. Yeah it was really good like 20 PLUS. The regens do take away 1 or 2 mpg. Don't look at the mileage with a truck like this.
My life time average for 2012 6.7 .13.x. That's it, Not GREAT but that is the number. It better then a gasser.
Yes I do tow heavy and the truck is a brick. The best mpg was in WY running at 40 mph at night. Yeah it was really good like 20 PLUS. The regens do take away 1 or 2 mpg. Don't look at the mileage with a truck like this.
#120
10-11-2017, 07:26 PM
i think that is a problem. Either your truck is really smoky or the sensor is reading high delta p across the dpf. I think you have a sensor issue or dpf issue but it could be a bad injector or some kind of egr issue. Sensor issue seems most likely to me.