DEF Usage
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Mountain Pass
Joined: Jul 2019
Posts: 175
Likes: 7
From: NW Suburban Chicago
DEF Usage
Not new to the PS, had an 02 with the 7.3......I searched and couldn’t find an answer.
I’ve had my 19 6.7 for just over 2 weeks, and put 1,300 miles on the clock. The DEF gauge just moved off the full mark over the weekend. I’m driving from Chicago to Dallas and back over Labor Day weekend.
How many miles can I expect before I have to add DEF?
Thanks in advance.
I’ve had my 19 6.7 for just over 2 weeks, and put 1,300 miles on the clock. The DEF gauge just moved off the full mark over the weekend. I’m driving from Chicago to Dallas and back over Labor Day weekend.
How many miles can I expect before I have to add DEF?
Thanks in advance.
FTE Legend
Joined: Mar 2017
Posts: 31,970
Likes: 9,197
From: Western NY
It all depends on the usage of your truck and the gear ratio. From the 2016 Diesel Supplement Manual on page 28:
http://www.fordservicecontent.com/Fo...US_04_2015.pdf
Look at page 28 where it shows mileage range for DEF according to use and gear ratio. This will give you a rough estimate of what you should get with your truck.
http://www.fordservicecontent.com/Fo...US_04_2015.pdf
Look at page 28 where it shows mileage range for DEF according to use and gear ratio. This will give you a rough estimate of what you should get with your truck.
Last edited by Overkill2; Aug 6, 2019 at 08:52 PM. Reason: Add to post
Lead Driver
Joined: Jan 2010
Posts: 6,600
Likes: 84
My 2011 would get around 1,000 miles per 1 gal DEF non-towing. The 2019's are different but I doubt the consumption has changed much. Dealers do not completely fill (on purpose) the DEF tank during PDI.
URL loads the owners manual, which page 28 discusses how to use the rear door child lock. 
It all depends on the usage of your truck and the gear ratio. From the 2016 Diesel Supplement Manual on page 28:
http://www.fordservicecontent.com/Fo...US_04_2015.pdf
Look at page 28 where it shows mileage range for DEF according to use and gear ratio. This will give you a rough estimate of what you should get with your truck.
http://www.fordservicecontent.com/Fo...US_04_2015.pdf
Look at page 28 where it shows mileage range for DEF according to use and gear ratio. This will give you a rough estimate of what you should get with your truck.
FTE Legend
Joined: Mar 2017
Posts: 31,970
Likes: 9,197
From: Western NY
My 2011 would get around 1,000 miles per 1 gal DEF non-towing. The 2019's are different but I doubt the consumption has changed much. Dealers do not completely fill (on purpose) the DEF tank during PDI.
URL loads the owners manual, which page 28 discusses how to use the rear door child lock.
URL loads the owners manual, which page 28 discusses how to use the rear door child lock.
2nd DOH!!
Try this one:
http://www.fordservicecontent.com/Fo...US_02_2014.pdf
It's actually on page 28 in the manual but is page 31 in the PDF.
Last edited by Overkill2; Aug 6, 2019 at 10:03 PM. Reason: Add to post
Laughing Gas
Joined: Oct 2017
Posts: 787
Likes: 73
From: Lansing MI
Not new to the PS, had an 02 with the 7.3......I searched and couldn’t find an answer.
I’ve had my 19 6.7 for just over 2 weeks, and put 1,300 miles on the clock. The DEF gauge just moved off the full mark over the weekend. I’m driving from Chicago to Dallas and back over Labor Day weekend.
How many miles can I expect before I have to add DEF?
Thanks in advance.
I’ve had my 19 6.7 for just over 2 weeks, and put 1,300 miles on the clock. The DEF gauge just moved off the full mark over the weekend. I’m driving from Chicago to Dallas and back over Labor Day weekend.
How many miles can I expect before I have to add DEF?
Thanks in advance.
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Mountain Pass
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From: NW Suburban Chicago
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Tuned
Joined: Jun 2019
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Order the Ford DEF fill tube. It attaches to almost all of the DEF fluid bottles. It is designed to stop flowing once the tank is full, and will not spill. I bought mine from my dealer for around $10 I believe. Not sure which year you have, but on the 11-16 it is important to completely fill the tank so it will trip the full tank level switch.
FTE Legend
Joined: Mar 2017
Posts: 31,970
Likes: 9,197
From: Western NY
Order the Ford DEF fill tube. It attaches to almost all of the DEF fluid bottles. It is designed to stop flowing once the tank is full, and will not spill. I bought mine from my dealer for around $10 I believe. Not sure which year you have, but on the 11-16 it is important to completely fill the tank so it will trip the full tank level switch.