DEF is DEF?
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Mountain Pass
Joined: Nov 2005
Posts: 162
Likes: 0
From: Las Cruces, NM
DEF is DEF?
My 2015 has always had Ford's DEF since it threw all kinds of codes at me one day about regeneration. I had to have a manual regen done by a Ford dealer.
The Ford dealer told me that I had to use Ford DEF and in fact, there was a bulletin that specified Ford DEF ONLY. The cost was not that far off of other DEF products, so I used it. I realize that DEF is DEF--that is there is one formula set by the Petroleum Institute so the manufacturer doesn't make a difference. Also, I know that there are millions of Ford 6.7-liter diesels on the road and they can't all be using Ford-brand DEF. I saw Walmart-brand DEF the other day which is half the price of Ford and Blue DEF.
What brand of DEF are you using? Have you had any problems with the system?
The Ford dealer told me that I had to use Ford DEF and in fact, there was a bulletin that specified Ford DEF ONLY. The cost was not that far off of other DEF products, so I used it. I realize that DEF is DEF--that is there is one formula set by the Petroleum Institute so the manufacturer doesn't make a difference. Also, I know that there are millions of Ford 6.7-liter diesels on the road and they can't all be using Ford-brand DEF. I saw Walmart-brand DEF the other day which is half the price of Ford and Blue DEF.
What brand of DEF are you using? Have you had any problems with the system?
Lead Driver
Joined: Feb 2005
Posts: 7,975
Likes: 2,669
From: The Great State of Texas
With the exception of the DEF in the tank from the dealer, I've only used Peak Blue DEF to date. With 256k miles all is still good. Last winter I was getting a DEF related message that the truck would go into reduce speed after 50 miles, but then would go away. So far this winter I haven't seen this message.
FTE Legend
Joined: Mar 2017
Posts: 31,962
Likes: 9,194
From: Western NY
For most of my DEF usage, it's been Walmart brand but have used Motorcraft as well. I have also bought it from Advance Auto also. I do have a couple of the Tractor Supply Traveller brand jugs in my basement now. No problems...
Laughing Gas
Joined: Feb 2007
Posts: 769
Likes: 156
When I read posts like this I am soooooooooooooo glad that I spent the $1800 to have the wasteful emissions deleted from my truck.
I realize that not everyone can do this in their particular region.
I use the same argument on why I bought an electric vehicle. The convenience of charging at home is worth it.
I realize that not everyone can do this in their particular region.
I use the same argument on why I bought an electric vehicle. The convenience of charging at home is worth it.
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Fleet Mechanic
Joined: May 2018
Posts: 1,765
Likes: 502
I've been using either BlueDEF or the stuff you get from Caterpillar (I forget the brand they carry). I'd run the Wally World stuff without hesitation also. Sadly, the idiot at the dealer talking out his hind-side is all too common and why I avoid dealers for service.
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Mountain Pass
Joined: Jul 2018
Posts: 190
Likes: 91
DEF is DEF. I've run WM, Blue DEF, Rotella DEF, Sinopec DEF, Prime Guard, Valvoline, Blue Sky.. Makes no difference, cause it's all the same.
Next up will be Colonial DEF, 2 for 26 on the WM com site.
Big sale on DEF at Rural King if you have one in your neck of the woods... 8.99 for 2.5 gallons.
Lots of info here, including who makes what brands. You'll be surprised.
Next up will be Colonial DEF, 2 for 26 on the WM com site.
Big sale on DEF at Rural King if you have one in your neck of the woods... 8.99 for 2.5 gallons.
Lots of info here, including who makes what brands. You'll be surprised.
Lead Driver
Joined: Nov 2005
Posts: 5,245
Likes: 4,266
From: Kaysville Utah
Since about 2015, I've only filled up at the pump at the various fuel stops I pass by. I have no idea what of DEF each gas station carries or if they are even consistent from station to station or month to month. I'm sure they buy it in the 275 gallon totes and probably get the low bid of the month when they need a new tote. I've never had a problem with DEF regardless of what fuel I buy it at. I run 30,000 miles a year. So I go thru a fair of DEF in 7 years of buying it at the pump. Stop wasting money buying it from the dealer and just fill up when you get fuel. Just put it in the right tank
Lead Driver
Joined: May 2021
Posts: 5,902
Likes: 3,525
From: Uh oh, CA
I mostly use Blue DEF. I have also used Casey branded DEF, DEF from pumps and most recently a jug of BLUE Platinum DEF. As little as I have to fill the DEF tank I don't get concerned with sourcing the absolute least expensive DEF I can find.