DEF Problems

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Jun 22, 2020 | 08:10 AM

Redrider007

Thread Starter

New User

Joined: Nov 2009

Posts: 5

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DEF Problems

Just curious on how many people have had issues with their DEF systems? I have a 2004 6.0 and will be upgrading in the next year and just want to know what to look forward to.

Jun 22, 2020 | 09:18 AM

honda250xtitan

Cargo Master

Joined: Jul 2017

Posts: 2,297

Likes: 552

2017....no issues with mine.

Jun 22, 2020 | 09:27 AM

DieselLineman

Junior User

Joined: Jun 2020

Posts: 53

Likes: 0

40k no issues

No issues on my 19' with 40k. I idle about 28% of the time according to my engine hour meter. First issue I do have with it will be its last though.

Jun 22, 2020 | 10:24 AM

C12H24

Posting Guru

Joined: Feb 2018

Posts: 1,555

Likes: 516

What in your research leaves you with the impression there are problems with the DEF system?

Jun 22, 2020 | 12:53 PM

honda250xtitan

Cargo Master

Joined: Jul 2017

Posts: 2,297

Likes: 552

Quote:

Originally Posted by C12H24

What in your research leaves you with the impression there are problems with the DEF system?

he's asking if there is. historically emissions systems suck, so i get why'd he'd be concerned. they seem to have it sorted out on these trucks though.

i agree with the other guy, the first issue i have will be the last, i'll delete it

Jun 22, 2020 | 05:57 PM

adamsfbay

Mountain Pass

Joined: Apr 2018

Posts: 143

Likes: 0

From: SF Bay Area

Of all the emissions systems DEF is the last one I’d worry about. Easy and cheap to fill, highly preferable to EGR to reduce NOx, and not a wear part like DPF (and less prone to rare failure - my entire DPF failed at 40k miles and was completely replaced under warranty). I wish they could eliminate EGR and just rely on SCR.

Jun 22, 2020 | 06:03 PM

CBEllis

Fleet Mechanic

Joined: Dec 2012

Posts: 1,563

Likes: 532

From: DFW

2017 - no DEF issues @ near 75k miles.

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Jun 23, 2020 | 12:25 PM

F TOO FITTY

Mountain Pass

Joined: Feb 2007

Posts: 245

Likes: 1

From: Sandy, OR

no problems with mine - uses about a gallon of DEF per 1000 miles running around empty, and about a gallon every 700 miles when towing. Get DEF at truck stop pumps for about $2.50/gal - so for the 19000 miles I've driven it, I've spent $50 on DEF so far.

Jun 23, 2020 | 01:25 PM

#10

kluger

Senior User

Joined: Apr 2010

Posts: 303

Likes: 0

From: SE Wisconsin

No problems with the DEF system on my 2011 for the 9 years I had it. A sample size of 1.

Jun 23, 2020 | 02:38 PM

#11

TeddyD

Postmaster

Joined: Jan 2019

Posts: 3,422

Likes: 20

I got 99 problems but a def system ain’t one.

Actually, I had the def heater system replaced when the truck was a few weeks old but other than that, not a problem.

Jun 23, 2020 | 10:34 PM

#12

maxum96

Tuned

Joined: Jan 2010

Posts: 419

Likes: 3

2019 F350 and no DEF issues. I love how clean burning my 6.7 is versus how my 6.0 was. I don't miss the noxious diesel fumes a bit. I think people that delete the DEF on their trucks are foolish for a variety of reasons.