2018 Diesel fuel issues

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Sep 12, 2018 | 07:41 AM

Ted62

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2018 Diesel fuel issues

Hey guys several topics here-hope someone can help: (2018 350 4x4 diesel)
1) My DTE is at 10 miles -to fill my 34 gallon tank it takes 27 gallons- per design by Ford (unbelievable!)
Is the best fix- set tank to 40 gallons with Forscan? Does it do damage to fuel pump to run reserve down to 2-3 gallons?
What are the issues if this engine runs out of fuel? restart procedure?
2) I have added a 60 gallon gravity feed aux tank (works great w/up fitter switch)
I want to use aux tank for hauling gasoline for boat in Mexico. Quote from my Ford diesel service rep.. "two teaspoons of gas mixed with 60 gallons of diesel will damage my 6.7! True?

Sep 12, 2018 | 08:39 AM

Blwnsmoke

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Restart procedures are in your manual.

You do NOT want to run put of fuel as the pump is cooled by the diesel and they are ultra sensitive.

You also do not want to get any gas in the motor for reasons above. These are not your 90s diesels where they will run on anything. These are super high pressure fuel systems.

Sep 12, 2018 | 09:11 AM

N2dunz

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Gas mixed with a modern diesel????
No way. That is crazy.
These things are so ultra sensitive.

Sep 12, 2018 | 09:37 AM

BillyE

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Quote:

Originally Posted by Ted62

Quote from my Ford diesel service rep.. "two teaspoons of gas mixed with 60 gallons of diesel will damage my 6.7! True?

Unlikely. I've seen studies of blended gas and diesel. It increases wear but not at those levels. Still, it's not a great idea. I still wouldn't do it...

Sep 12, 2018 | 10:35 AM

bitNine

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From: Denver, CO

Ford does seem to go a bit overboard in the DTE department. My Ram was "empty" at 3 gallons left. That' would typically give 30 miles while towing, and I never had a problem with that. However, when I last got my SD to zero, I put 29 gallons in it.

Sep 12, 2018 | 10:45 AM

cficare

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From: SEVA

Quote:

Originally Posted by Ted62

1) My DTE is at 10 miles -to fill my 34 gallon tank it takes 27 gallons- per design by Ford (unbelievable!)
Is the best fix- set tank to 40 gallons with Forscan? Does it do damage to fuel pump to run reserve down to 2-3 gallons?

Mine is a 2017 Job 2 and does the same thing, but it doesn't bother me any. There was a TSB for early 2017 SDs about DTE readings versus fill-up amount, and the problem seems to persist.
Here are a couple threads on the TSB ...
https://www.ford-trucks.com/forums/1...-tank-tsb.html
https://www.ford-trucks.com/forums/1...-tank-tsb.html

Sep 12, 2018 | 01:04 PM

hi3cho

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My DTE was pretty dead on, only my first tank so not sure if it will continue. I filled up with ~100 mi to E, it took ~42 gallons of my 48 gallon tank. With my average of 16MPG it was pretty dead on.