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Diesel Particulate Filter Gauge , Is It Working

b1lanc said:
Went off like clockwork at 24 engine hours.
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I just looked at the gauge today and it’s at 25%, haven’t had the truck but a little over a week and it has 1,000 miles on it. When it was delivered it had 1/2 tank of Def, I put 500 miles on it then towed the 5th wheel 3 hours. It used 1/4 tank of Def between the 500 miles and the 3hr trip so I added a keg to it and can tell it’s used some on the way back and this past week so I assume it’s all working properly.
 
Leadchuncker said:
Hopefully it’s a quick fix for the leak.
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Hopeful…I have a lot to do in 4 weeks before the 6,000+ mile trip

I did notice the truck had 3 hours do idle time on it when I picked it up with 15 miles on it. Maybe that’s why I’m already at 30%?
 
pacnw1963 said:
Hopeful…I have a lot to do in 4 weeks before the 6,000+ mile trip

I did notice the truck had 3 hours do idle time on it when I picked it up with 15 miles on it. Maybe that’s why I’m already at 30%?
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Probably… I try not to let mine idle to much. I did let it idle a little when we reached the beach to cool down a little but it wasn’t but 15 minutes or so
 
pacnw1963 said:
Hopeful…I have a lot to do in 4 weeks before the 6,000+ mile trip

I did notice the truck had 3 hours do idle time on it when I picked it up with 15 miles on it. Maybe that’s why I’m already at 30%?
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Not likely i have hundreds of idle hours without anything on the gauge till i hit 50k km…
 
H3LZSN1P3R said:
There is really no reason or pattern of how the DPF filter plugs up so its not worth loosing sleep over
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Lol…thanks! At my age I wake up at 2am anyway.

So this morning I drove my truck back to Mark Dodge (80 miles) to get the water leak fixed. It was still around 30%, then it dropped down to 0%, then by the time I got there it was hovering around 15%. Maybe it did a passive regen, I have no clue. Hit 512 miles and around 11-12 hours of engine time.

My old truck was a 2006 2500 with the 5.9L and none of this stuff I have no idea about.
 
~6,500 miles driven, no regens so far. After about 45 minutes of highway driving unladen or ~30 minutes of towing my DPF guage goes back to 0.
 
This morning I scrolled through to the DPF gauge and drove 20 minutes to the family compound. The gauge was up to 30-40 percent so I put it in tow/haul with the engine brake on high and rode . After a few hours and then driving back home it started a regin so I kept driving and went the long way home. When I pulled in the carport it was still going so I though I’d just put it in park and let it finish. Well it stopped so I pulled it back in drive and it started back. I then put it in neutral, it kept going this time so I set the park brake and let it finish. Took around 10 minutes before it was finished and the gauge went back to zero.
Truck now had almost 1,200 miles.
 
I was on the opposite side of regen, my commute was only 5 miles away at an average 40mph. Every week it went into regen, and because it wasn't a long enough drive, it could take up to two round trips to reset. I've towed 2000K mile at 19K GCW and never saw a regen. If the percentage raised just before a regen, I would go on a 30 to 40 mile trip with and go up a 4% grade empty, the level would drop without a regen. As long as you don't get a "DPF at 100% see your dealer" I wouldn't worry about your regen, I wouldn't lose any sleep over it.
 
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RVTRKN said:
I was on the opposite side of regen, my commute was only 5 miles away at an average 40mph. Every week it went into regen, and because it wasn't a long enough drive, it could take up to two round trips to reset. I've towed 2000K mile at 19K GCW and never saw a regen. If the percentage raised just before a regen, I would go on a 30 to 40 mile trip with and go up a 4% grade empty, the level would drop without a regen. As long as you don't get a "DPF at 100% see your dealer" I wouldn't worry about your regen, I wouldn't lose any sleep over it.
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My buddies 21 would throw a code that it was regening to often and the gauge would be at 100%, went to the dealer 3 times and they couldn’t figure it out. Finally I talked him into switching Def fluid to blue Def platinum and after a few weeks it cleared up and hasn’t given any more problems.
I know a lot of people call the platinum BS but the difference is they use deionized water instead of distilled and with that it’s pure with no contaminates.
 
Leadchuncker said:
My buddies 21 would throw a code that it was regening to often and the gauge would be at 100%, went to the dealer 3 times and they couldn’t figure it out. Finally I talked him into switching Def fluid to blue Def platinum and after a few weeks it cleared up and hasn’t given any more problems.
I know a lot of people call the platinum BS but the difference is they use deionized water instead of distilled and with that it’s pure with no contaminates.
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Thats a huge coincidence then or someone is full of it… the DEF gets sprayed after the DPF so it would have no chance in hell of affecting the Regen cycle or the DPF filter
 
Leadchuncker said:
This morning I scrolled through to the DPF gauge and drove 20 minutes to the family compound. The gauge was up to 30-40 percent so I put it in tow/haul with the engine brake on high and rode . After a few hours and then driving back home it started a regin so I kept driving and went the long way home. When I pulled in the carport it was still going so I though I’d just put it in park and let it finish. Well it stopped so I pulled it back in drive and it started back. I then put it in neutral, it kept going this time so I set the park brake and let it finish. Took around 10 minutes before it was finished and the gauge went back to zero.
Truck now had almost 1,200 miles.
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Running it in tow haul will not change anything with the regen cycle unless you actually had a load on all you are doing is burning more fuel when its shifting through the gears
 
H3LZSN1P3R said:
Thats a huge coincidence then or someone is full of it… the DEF gets sprayed after the DPF so it would have no chance in hell of affecting the Regen cycle or the DPF filter
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H3LZSN1P3R said:
Running it in tow haul will not change anything with the regen cycle unless you actually had a load on all you are doing is burning more fuel when its shifting through the gears
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Def is injected before the scr system.

The only other thing added to the truck was Hotshots Secret EDT. All that does is cleans the fuel system and ups the cetane level so that will increase the burn of fuel a little more. As far as the scr system goes using the additive I’d assume with the fuel burning cleaner and hotter it may help keep the system cleaner.

The only thing I see with the tow/haul being on in that situation besides using more fuel is I was running country roads and a slower pace so the engine isn’t lugging and while it wasn’t shifting to 6th gear a little more exhaust is moving through the system with a tad more force since your rpm’s aren’t low.
 
Leadchuncker said:
Def is injected before the scr system.
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which is after the DPF the SCR… it goes DOC DPF then SCR i have it all laid out on my shed floor i could send you a picture if you like… i had 53k when i removed it and always used the cheapest DEF i could find and the DPF still looks pretty clean all considering and the SCR is spotless as it should be


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