DPF / Regen Information - Page 3 - Ford Powerstroke Diesel Forum
General 6.7 Discussion (2017-2019) General 6.7 Discussion

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post #21 of 40 Old 06-04-2019, 07:00 PM
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I should also mention that when I am working in the northern Canadian oilfield, I usually disable auto regen because I go for weeks where I do not have access to roads that I can travel the minimum 48km/hr. Once the truck automatically did a stationary regen in my driveway a few minutes after I hit the command start. Wow, does that blow a lot of white vapour out the exhaust. Completely filled my entire street/bay. I was surprised it did a stationary regen when it did because there was no way that the truck was up to normal operating temperature yet. It was -35 and the truck only ran for about 5-10min before it started. Again, the night before when I parked it, no dash warning for the DPF system came on the display.
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post #22 of 40 Old 06-04-2019, 08:00 PM Thread Starter
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Thanks for the reply. I began looking at additives to address lubricity and cetane numbers and keeping the fuel system clean. My daily commute is mixed with about 65% moderate city driving. I believe the additives have helped because my manual calculations before were in high 200s to mid 300s. And it is correct that the factory high limit is 500 miles. Like @TeddyD I intend to use the auto regen selector to extend my mileage beyond 500 but since my commute is not as ideal I will do a little more testing. Again many thanks for the replies!

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post #23 of 40 Old 06-05-2019, 06:28 AM
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So I've been wondering and searching on this....what happens to the ash that is created during a regen? May be off base, but I liken a regen to a self cleaning oven. Stuff turns to ash basically. So is this expelled out the exhaust or does it accumulate and one day the DPF will plug and need replacement? If the latter, what is the mileage or time interval with a replacement?

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post #24 of 40 Old 06-05-2019, 06:48 AM
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The very fine white ash is blown out the exhaust. It looks like a cloud of white smoke coming from the tail pipe. In -20Cish weather, you can really see it but in warmer climates, it’s only noticeable by smell.

DPF filters do require maintenance and manual cleaning at some high mileage interval. There is a spray you can buy that you open up a small access port in the exhaust and spray it towards the DPF filter. I’m not sure what ford charges for a full DPF cleaning service but I know, with my previous Dodge, it was $1000CAD service. I’m not exactly sure what the dealer cleaning process actually entails.

Last edited by TeddyD; 06-05-2019 at 06:52 AM.
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post #25 of 40 Old 06-24-2019, 06:34 PM Thread Starter
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Quote:
Originally Posted by jd4010 View Post
So I've been wondering and searching on this....what happens to the ash that is created during a regen? May be off base, but I liken a regen to a self cleaning oven. Stuff turns to ash basically. So is this expelled out the exhaust or does it accumulate and one day the DPF will plug and need replacement? If the latter, what is the mileage or time interval with a replacement?
I have been looking into this also and will report what I find.

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post #26 of 40 Old 06-24-2019, 06:46 PM Thread Starter
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2019-06-24

I have began using BetterDiesels FBC along with my OptiLube blend. I am on my second full tank and have had 3 regens. The first regen was uneventful and began at 400 miles. The second began at 524 miles because I disabled the autoregen. The third was a little different. I usually don't monitor the mileage between regens until after they are complete. I have always monitored DPF_SOOT_PCT_OL until it reaches 100%. I was caught off guard this time because it began at 83% with the mileage at 497.1 miles.
Additional goals:
monitor change in DPF_SOOT_PCT_OL values at time regens begin
monitor time it takes to complete regens (currently greater than 25 minutes)
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post #27 of 40 Old 06-24-2019, 06:53 PM
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Originally Posted by jd4010 View Post
So I've been wondering and searching on this....what happens to the ash that is created during a regen? May be off base, but I liken a regen to a self cleaning oven. Stuff turns to ash basically. So is this expelled out the exhaust or does it accumulate and one day the DPF will plug and need replacement? If the latter, what is the mileage or time interval with a replacement?
I have been looking into this also and will report what I find.
The DPF filter catches the black soot and the regen burns that soot to a white ash which is expelled through the exhaust. The DPF filter over time will start to get plugged with this white ash and that will require a cleaning. The manual states around 120,000miles or so. The white ash is so fine that it is virtually impossible to see unless you are in -10 temperatures. In that temperature, you will see like a white fog or vapour coming out of the exhaust.
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post #28 of 40 Old 06-24-2019, 06:54 PM
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Why so many regens? Are you doing a lot of city/stop and go driving?
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post #29 of 40 Old 06-24-2019, 07:39 PM
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I use enerburn/FBC and summer+
The truck only regens at software mandated 500 mi intervals. %load on screen is usually only 40-80%. Regen itself only takes about 8 minutes/ miles. (To 0%)
This is with mixed driving (city/hwy/ towing 10K and empty). 2012 CCLB SRW 3.55 axle.
One trick I use is to lock out 6th gear if not on freeway to keep RPM up at 2000 like the static regen This shortens the time on the back roads.
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post #30 of 40 Old 07-05-2019, 09:37 PM Thread Starter
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Quote:
Originally Posted by GregWork View Post
I use enerburn/FBC and summer+
The truck only regens at software mandated 500 mi intervals. %load on screen is usually only 40-80%. Regen itself only takes about 8 minutes/ miles. (To 0%)
This is with mixed driving (city/hwy/ towing 10K and empty). 2012 CCLB SRW 3.55 axle.
One trick I use is to lock out 6th gear if not on freeway to keep RPM up at 2000 like the static regen This shortens the time on the back roads.
Thanks. I did read some of your prior posts in which you mentioned this. I'll have to try locking out 6th gear.

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