Buddy put 2.5 gal DEF in fuel tank - Ford Powerstroke Diesel Forum
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post #1 of 20 Old 12-08-2012, 01:09 PM Thread Starter
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Buddy put 2.5 gal DEF in fuel tank

My neighbor dumped 2.5 gallons of DPF in his fuel tank this morning and drove it 3-4 miles before truck started to act up.
He got home and shut it down. No warning lights, but it ran like it was getting zero fuel or making boost.
I grabbed a bucket and went under to drain water separator, and it drained a white milkshake looking fluid. Filled a 2 gallon bucket after an hour of cycling key switch etc.

Finally got clear diesel to pour from separator and fired truck up... Do you think he will be fine? I know Ford will not cover this under warranty. Says so right in the manual!!
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post #2 of 20 Old 12-08-2012, 01:20 PM
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I would drain the entire tank and rinse it out with more diesel, if it was My truck.

The water seperator is designed for getting water out not urea...

This topic has been covered before too.

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post #3 of 20 Old 12-08-2012, 01:43 PM Thread Starter
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Thanks Big L,

I tried a search of DEF in fuel and got nothing back. If you know a link I would love to read more.
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post #4 of 20 Old 12-08-2012, 02:13 PM
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I wonder is this going to show fuel warning, codes?? Even if you got it fixed in time, can the Ford peoples claim on this. After all it did act up? I believe few tanks of diesel for flushing is cheaper than the fuel system replacement.
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post #5 of 20 Old 12-08-2012, 02:13 PM
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This is odd, yesterday I was reading a DEF in fuel story, and now I can't find it.

This is thread has alot of info, if you have an hour or so to read Ford won't fix my fuel system I know it's not the same thing, but alot of similar info.

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post #6 of 20 Old 12-08-2012, 06:19 PM
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DEF is prepared by dissolving solid high purity urea in deionized water to create a 32.5% solution in water. Knowing that, I'd completely drain the tank, put in a few gallons of diesel and cycle it through the system to get rid of the old fuel and then drain it also. After that, change the fuel filters. This would be the least I'd do. And really, I'd probably do the couple of gallon/filter flush a few times. The fuel system is just too expensive.

Last edited by vgostomski; 12-08-2012 at 06:44 PM. Reason: spe
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post #7 of 20 Old 12-08-2012, 06:30 PM
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Next thing i would do is get the admin to delete the thread. Trust no one .

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post #8 of 20 Old 12-08-2012, 06:41 PM
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^ lol thats funny...would the dealer be able to tell if u accidently added DEF in the tank? Lets say u flush it out completely and change the filters but the truck still acts up

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post #9 of 20 Old 12-08-2012, 09:46 PM
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Quote:
Originally Posted by HarvestingInternationally View Post
^ lol thats funny...would the dealer be able to tell if u accidently added DEF in the tank? Lets say u flush it out completely and change the filters but the truck still acts up
Easy to tell (see figures 10-13 in the attached file), probably already too late for the OP's neighbour's truck as the damage has already been done as the truck has been started and ran.
Attached Files
File Type: pdf 67L_Fuel_System_revised.pdf (1.25 MB, 783 views)
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post #10 of 20 Old 12-09-2012, 04:40 AM
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Quote:
Originally Posted by camdenlake View Post
Next thing i would do is get the admin to delete the thread. Trust no one .

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I'm with you on this one!!!

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