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Ford Truck Club Forum > FORD F-250 | F-350 SERIES | SUPER DUTY > 2011-2016 Ford F250 | F350



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  #1  
Old July 21st, 2014, 03:28 PM
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Default DEF question

For those of you using the new emissions on the super duty, do you ever have to add DEF between service appointments, or does it last till the next oil change?

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Old August 9th, 2014, 10:18 AM
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here's some discussion on DEF

http://www.shovelhead.us/forum/showthread.php?t=158280


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Old August 9th, 2014, 11:40 AM
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yeah lots of chatter over there, but it really isn't that big of deal to me having it on the truck. I don't give a rats @$$ about emissions, but if it's on there I would not try to tamper with it let alone run something other than DEF in the tank. I guess the only real concern I have is running out of this stuff because the computer will put you in limp mode and if it runs out, I hear the repair bills are horrible. I keep a good eye on it and carry a 2 gallon jug with me in the truck. More times than not, it does last between service appts and they top off the tank as part of the service.

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Old August 9th, 2014, 01:07 PM
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The cheapest way to buy DEF is at truck stops where they have a bulk pump.

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Old August 9th, 2014, 06:59 PM
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The company I work for actually carries it in 2gal bottles for cheaper than the truck stops.

Your talking a F350, I'm surprised the tank lasts between services. Our trucks usually eat quite a few tanks between services. I'm sure there is a difference in your truck and ours too tho!

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Old August 9th, 2014, 09:28 PM
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I'm not talking about buying it in jugs at the truck stops - I'm talking about buying it at the pump.

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Old August 10th, 2014, 04:23 PM
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Here in the north east and mid atlantic, I think I've only seen it once at a bulk pump and I didn't catch what the price was. The convenience centers at rest stops is the worst prices I see and even auto stores is way over priced. My Ford dealer ship guy sells it to me for $16 for 5 gallons which is good compared to buying at other places I've had to in the past.

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Old August 10th, 2014, 04:31 PM
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Quote:
Originally Posted by catmechanic07 View Post
The company I work for actually carries it in 2gal bottles for cheaper than the truck stops.

Your talking a F350, I'm surprised the tank lasts between services. Our trucks usually eat quite a few tanks between services. I'm sure there is a difference in your truck and ours too tho!
Since putting this truck into service, I've had it serviced 15 times and only twice I had to add DEF before the next appointment. I remember years ago, a couple years before this new emissions system went into production; I was at a Ford honcho get together and the guy promoting and singing the praises of the DEF system said that people running the new strokers with this DEF system won't even now it's there since the only time DEF will need to be added will be when its time to service. I do eat more of this stuff up when I'm towing in mountainous areas. Just using it as a daily driver doesn't seem to go through it that bad. The reading you get from system check leaves a lot to be desired, though. My truck just says DEF level is good or it says less than half tank. When I get down to 500 miles left in the tank I get a mileage warning every time I start the truck or periodically while driving. I never let it get down to much under 200 mile range just in case its not that accurate in gauging remaining mileage.

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Old August 10th, 2014, 05:23 PM
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DEF at the pump at most Pilot/Flying J's is $2.79 a gallon.

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Old August 11th, 2014, 08:24 AM
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Quote:
Originally Posted by glc View Post
DEF at the pump at most Pilot/Flying J's is $2.79 a gallon.
That's way better prices than by the jug. Like I said earlier, my service guy at the dealership gives me a decent price of $3.35 per gallon, but I have seen ridiculous prices of $10 per gallon.

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