Hi everyone, My first post so take it easy on me
I have a 2017 F250 diesel. At zero DTE, I think the tank held 28 gal. Yes the truck has already had the tank with new sending unit replace by the dealer.

My question is in regard to a IPC parameter in FORScan: DTE Empty value. On my truck the value is set to 6. Could this be a 6 gal threshold for reporting zero DTE?
Thanks

 

Interesting - for the past 3 years people have complained about the DTE reading very conservatively; would be interesting if this allows it to be changed...

 

I would be interested in seeing how it changes the As Built data

 

Yes that is what that’s for, it’s set at 6 gallons left at empty. I read that Ford wants 5 gallons on top of the sump as to not ever have it suck air. I asked this question awhile back and got no replies but I changed mine to 4 and my DTE went up drastically I should have recorded the numbers but I did not so I can’t give an accurate one. I have been running around like this for probably 4K miles now with no issues and since I do not ever let mine get below 1/4 I don’t see it ever being an issue, until it is I guess lol. I always hated filling up and seeing 300 or so to E. Now I fill up and have above 400, I think all in all it’s more of a mind thing for me. I’m also curious if anyone else has done this, it’d seem like someone out there would have but was all crickets when I asked.

 

Anyone who has done this…has this change caused issues?

 

I've read on this message board that four gallons should remain to cool the fuel pump. These arguments seem plausible and maybe one or both are true.

 

Try reviewing this thread. Not sure if it works on a 1999ym, but for me, it is very accurate on the DTE, MPG.

https://www.ford-trucks.com/forums/1...-accuracy.html

 

The MPG algorithm has a direct impact on the DTE value displayed. The following explains how to adjust 2017-2019 MPG readings, and I do not yet know if the same applies to my 2022. I plan to wait until I've filled the tank at least 10 times before I attempt making any adjustment. The following is from a Forscan thread, but you do not need Forscan to adjust the algorithm.
https://www.ford-trucks.com/forums/1...l#post18097223

 

EDIT TO ADD: If you compare your hand-calculated MPG rates to the dashboard's "Lie-O-Meter," you may become disappointed to realize why it's referred to as the "LOM." On my 2017 6.7L F250, I found the LOM was very optimistic and consistently displayed MPG values that were 9% to 10% higher than the hand-calculated values.