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12-04-2016, 12:18 PM
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#1
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Senior Member
Join Date: Aug 2012
Location: Waco, Tx
Posts: 5,457
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Real world fuel & DEF log
For the record... here is my log on DEF usage in my 2015 F350 dually
I refill mine at my first opportunity after seeing the less than 1/2 full warning... I did the same thing with my 2012 with close to the same results...
And for those interested... real world mileage log... you can clearly see when I'm towing or staying in town
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2015 Ford F350 DRW 6.7 Diesel XL
2020 Avalanche 313 RS
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12-04-2016, 04:07 PM
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#2
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Senior Member
Join Date: Jul 2014
Location: Solomons
Posts: 3,874
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Re: Real world fuel & DEF log
Thanks for the info. In the event we upgrade to a 5er and get a new TV it will be useful.
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Tom
2019 Alpine 3651RL
2016 F350 CC DRW
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12-04-2016, 04:25 PM
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#3
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Senior Member
Join Date: Oct 2014
Location: Germantown, TN
Posts: 6,334
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Re: Real world fuel & DEF log
Javi, because I'm trying to read the chart on a POS very small laptop, tell me how many gallons of DEF you used in the 20,700 miles. I know none of this will change anything, but for us old farts it is infinitly interesting.
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Jim in Memphis, Wife of 51 years is Brenda
2019 F450 6.7 Powerstroke
2018 Mobile Suites 40RSSA
2021 40' Jayco Eagle
2001 Road king w/matching Harley sidecar
2021 Yamaha X2 Wolverine 1000
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12-04-2016, 04:47 PM
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#4
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Senior Member
Join Date: Aug 2012
Location: Waco, Tx
Posts: 5,457
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Re: Real world fuel & DEF log
Quote:
Originally Posted by notanlines
Javi, because I'm trying to read the chart on a POS very small laptop, tell me how many gallons of DEF you used in the 20,700 miles. I know none of this will change anything, but for us old farts it is infinitly interesting.
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6 fills x 2.5 gallons = 15 gal
Javi
__________________
2015 Ford F350 DRW 6.7 Diesel XL
2020 Avalanche 313 RS
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12-04-2016, 06:22 PM
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#5
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Senior Member
Join Date: Jul 2014
Location: Nevada
Posts: 2,695
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Re: Real world fuel & DEF log
At that rate, (if I had DEF) it would cost me ~$96/yr, including tax.
__________________
Desert185 🇺🇸 (Retired Chemtrail vendor)
-Ram 2500 QC, LB, 4x4, Cummins HO/exhaust brake, 6-speed stick.
-Andersen Ultimate 24K 5er Hitch.
-2014 Cougar 326SRX, Maxxis tires w/TPMS, wet bolts, two 6v batts.
-Four Wheel 8' Popup Camper.
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12-05-2016, 05:16 AM
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#6
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Senior Member
Join Date: Aug 2012
Location: Waco, Tx
Posts: 5,457
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Re: Real world fuel & DEF log
Quote:
Originally Posted by Desert185
At that rate, (if I had DEF) it would cost me ~$96/yr, including tax.
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Wished I had time to drive 40K a year.. but then I'd never be able to actually camp...
__________________
2015 Ford F350 DRW 6.7 Diesel XL
2020 Avalanche 313 RS
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12-05-2016, 06:07 AM
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#7
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Senior Member
Join Date: Jan 2012
Location: Central San Joaguin Valley, CA
Posts: 2,117
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Re: Real world fuel & DEF log
We recently completed a cross country trip of 9251.8 miles - (7580.7 towing and 1671.1 empty). Filled the DEF on the day we left and on the day we returned - used a total of 9.5 gallons. That's 973.9 miles per gallon of DEF. Our average cost per gallon was 3.58 for a total of 34.05. Our cost per mile for DEF was .368 cents per mile.
Our actual, hand calculated fuel mileage over the entire trip was 12.88 mpg.
That kind of fuel mileage more than offsets the cost of DEF. BTW, our truck is a 2011 6.7L Ford FWD with the 6 spd auto and 331 gears. After we left California we traveled at 60-62 mph. Our combined weight for this trip was 18000#.
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Jack & Marty
2018 Laredo 298 SRL
2011 F-250 SB Crew Cab 4x4 6.7L
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12-05-2016, 07:39 AM
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#8
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Senior Member
Join Date: Jul 2014
Location: Nevada
Posts: 2,695
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Re: Real world fuel & DEF log
Quote:
Originally Posted by Javi
Wished I had time to drive 40K a year.. but then I'd never be able to actually camp...
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20,700 miles a year that was quoted, for $90 or so, of DEF. Not too bad, but better for me if I don't have to pay it.
__________________
Desert185 🇺🇸 (Retired Chemtrail vendor)
-Ram 2500 QC, LB, 4x4, Cummins HO/exhaust brake, 6-speed stick.
-Andersen Ultimate 24K 5er Hitch.
-2014 Cougar 326SRX, Maxxis tires w/TPMS, wet bolts, two 6v batts.
-Four Wheel 8' Popup Camper.
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12-05-2016, 07:54 AM
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#9
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Senior Member
Join Date: Aug 2012
Location: Waco, Tx
Posts: 5,457
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Re: Real world fuel & DEF log
Quote:
Originally Posted by Desert185
20,700 miles a year that was quoted, for $90 or so, of DEF. Not too bad, but better for me if I don't have to pay it.
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That was from March 2015 until Nov 2016
I'm paying around $12 for a 2.5 gal jug although I've gotten it for $2.79 a gallon too...
__________________
2015 Ford F350 DRW 6.7 Diesel XL
2020 Avalanche 313 RS
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12-05-2016, 08:03 AM
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#10
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Senior Member
Join Date: Jul 2014
Location: Nevada
Posts: 2,695
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Re: Real world fuel & DEF log
Quote:
Originally Posted by Javi
That was from March 2015 until Nov 2016
I'm paying around $12 for a 2.5 gal jug although I've gotten it for $2.79 a gallon too...
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I was applying the usage/cost rate to my situation where I drive 20,000 miles/year. 20 months @ $2.79/gal is much better than what I would drive and pay per gallon.
Cost per mile vs cost per year. I think of the cost per year like registration/licensing tax/fees.
__________________
Desert185 🇺🇸 (Retired Chemtrail vendor)
-Ram 2500 QC, LB, 4x4, Cummins HO/exhaust brake, 6-speed stick.
-Andersen Ultimate 24K 5er Hitch.
-2014 Cougar 326SRX, Maxxis tires w/TPMS, wet bolts, two 6v batts.
-Four Wheel 8' Popup Camper.
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12-05-2016, 08:18 AM
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#11
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Site Team
Join Date: Mar 2011
Location: Gaylord
Posts: 26,997
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Re: Real world fuel & DEF log
I buy my DEF at WalMart for $8 for 2.5 gallons. That comes out to about $3.20 a gallon, which is about the same price as most truck stops with "at the pump" dispensers. My DEF usage is about the same as both Javi and jsmith948. I've got roughly 25,000 miles on my truck and have used about 18 gallons of DEF. That equates to about 1400 miles per gallon. At $3.20 per gallon, so far it's cost me about $58 for 2 years of DEF.
So, driving about 12,500 miles a year, DEF cost (for me) is about $29 a year.
If I bought the more expensive DEF (Blue DEF @ $12 per 2.5 gallons) it would increase the annual cost to about $43 per year.
Honestly, DEF costs are negligible when compared to the diesel fuel that was burned in previous "exhaust technology" to do almost the same thing (clean the catalyst) ...
__________________
John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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12-05-2016, 11:01 AM
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#12
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Senior Member
Join Date: Jul 2014
Location: Nevada
Posts: 2,695
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Re: Real world fuel & DEF log
That's not bad. I understand the cost of technology.
To be fair and balanced 😃, I don't have a cat and my mileage is consistently 20-22 MPG. Just an old, tuned, 24V Cummins that doesn't blow a lot of smoke and gets the job done.
__________________
Desert185 🇺🇸 (Retired Chemtrail vendor)
-Ram 2500 QC, LB, 4x4, Cummins HO/exhaust brake, 6-speed stick.
-Andersen Ultimate 24K 5er Hitch.
-2014 Cougar 326SRX, Maxxis tires w/TPMS, wet bolts, two 6v batts.
-Four Wheel 8' Popup Camper.
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