Let's talk regen
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5th Wheeling
Joined: Aug 2023
Posts: 45
Likes: 33
From: Louisville, KY
Let's talk regen
Sorry if this has been covered but... I have a 2023 F350 6.7 XL. It has a little over 18K miles on it and I have never been aware of it performing a regen. The DEF usage seems normal and when I check the DPF % it looks good (goes up and down). I keep reading about folks using the Banks monitor to see the regen status or using Forscan (sp?) to enable a check box to control the auto-regen. My last big truck was a 2019 Cascadia and it was very obvious when it was performing a regen lol. What am I missing here with my F350? Hell, if it is taking care of business without me even noticing then that's great... right? Maybe since it's an XL with the simplified dash I might not be seeing something?
More Turbo
Joined: Sep 2019
Posts: 571
Likes: 56
I use the banks monitor to watch for active regens so I don’t stop in the middle of one . I have noticed that the dash percent in the DPF goes down very quickly but it stays active a good 15-20 minutes past that .
Laughing Gas
Joined: Apr 2023
Posts: 902
Likes: 1,817
From: SE PA
At 18K miles you have had, unless you are towing a lot, about 36 regens, it does it about every 500 miles. The 23 model year added a ninth injector located on the DPF which speeds up regens to about 10 minutes regardless of where or how fast you are driving. On my 23 XLT I occasionally look at the DPF% screen at around the expected regen time based upon mileage. The only time I notice a regen is if it occurs just prior to or when I shut the engine off and I smell burning from the exhaust. I do not have any extra gauges and even though I have Forscan I am not interested in messing with auto regens since the truck can take care of itself.
Logistics Pro
Joined: Sep 2002
Posts: 4,410
Likes: 1,015
From: Central KY
Did the addition of the "9th injector" do anything for fuel savings? Because on prior model years one way you could tell that you were in regen was that the instant MPG display would fall like a rock. Horrendous fuel economy while actively in regen.
Laughing Gas
Joined: Apr 2023
Posts: 902
Likes: 1,817
From: SE PA
Good question, I have not looked at that. I am due a regen in the next day or two and I will try to remember to look at that.
Lead Driver
Joined: Feb 2022
Posts: 7,946
Likes: 4,037
The newer trucks also have a passive regen that the older ones don't. Watching the instant economy will tell you when it is active as more fuel will be consumed. When doing a passive, it uses the extra heat from a hard pull to remove some soot, so watching EGT temps will clue on a passive. My 2019 wont do passive, at least not that I have seen, the % never drops but continues up until regen needed pops up. On the iDash I have seen soot percentage fluctuate, but only occasionally.
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Super Moderator
Joined: Aug 2008
Posts: 37,370
Likes: 1,858
From: Frederick, MD
I could passively regen in my 2013 and in my current 2021. The issue really is EGT's.
Get EGT 11 and 14 up to around 700-800 F and it will passively regen over time. Up the hill you are up there burning fuel creating soot.
Down the hill the temps are hot and it passively regens all the way down the hill.
Get EGT 11 and 14 up to around 700-800 F and it will passively regen over time. Up the hill you are up there burning fuel creating soot.
Down the hill the temps are hot and it passively regens all the way down the hill.
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Lead Driver
Joined: Dec 2020
Posts: 8,634
Likes: 2,429
That right there is all you need to know that it is going into regen. I'd toy care,you could try to catch it while it's going down and continue to drive until it stops.
FTE Legend
Joined: Mar 2017
Posts: 31,760
Likes: 9,113
From: Western NY
The older trucks will passively regen because I've seen my dash SL% reduce (in 5% increments) at least twice... does not happen often but have seen it. The Banks iDash SL% does drop when EGT4 is hot enough, usually at around at least 470ish to 500 degrees plus, and for the dash SL% to drop, the iDash SL% has to drop at least 10% IIRC... driving on a flat roadway you will not see it unless pulling a load but working the engine, like I do when driving the expressway home as altitude climbs and the hills I climb once off, it'll do it. But once it cools down, EGT4, SL% starts climbing again. I use Pittsburgh Power Max Mileage FBC so maybe it's helping...
Those latest and greatest with the 9th injector in the DPF get hot quick and get them done quick from what owners have been saying here...
Those latest and greatest with the 9th injector in the DPF get hot quick and get them done quick from what owners have been saying here...
Lead Driver
Joined: Feb 2005
Posts: 7,906
Likes: 2,625
From: The Great State of Texas
From my understanding the "9th injector" regen process is more efficient. Still requires extra diesel to heat the DPF but requires less fuel to do it and you should still see it with the instant MPG display.
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5th Wheeling
Joined: Aug 2023
Posts: 45
Likes: 33
From: Louisville, KY
Thank you for all the replies. Good info. I figured it had to be doing regens but (in my opinion) I love the fact that I am unaware of when it does them. Like Strider250 said, "the truck can take care of itself". Take care all. - Hutch
Lead Driver
Joined: Feb 2022
Posts: 7,946
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I could passively regen in my 2013 and in my current 2021. The issue really is EGT's.
Get EGT 11 and 14 up to around 700-800 F and it will passively regen over time. Up the hill you are up there burning fuel creating soot.
Down the hill the temps are hot and it passively regens all the way down the hill.
Get EGT 11 and 14 up to around 700-800 F and it will passively regen over time. Up the hill you are up there burning fuel creating soot.
Down the hill the temps are hot and it passively regens all the way down the hill.
Laughing Gas
Joined: Apr 2023
Posts: 902
Likes: 1,817
From: SE PA
I just took the truck out on the turnpike this morning to check the regen mpg and here is what I saw. With the cruise control set at 65 mpg varied between 14 and 30+, there are hills here, during regen the mpg ranged between 10 and 20. When the regen stopped the mpg jumped from 14 to 20.
Cargo Master
Joined: Jul 2011
Posts: 2,650
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From: Walpole, MA