So, a little history and comparison for me.

While living in Illinois (flat but often windy) my regen intervals would be around 450 miles while my fuel economy was around 23-24 according to the DIC (which is optimistic by a little bit).
Since moving to Oregon my regen interval has dropped to around 320 miles but my fuel economy has gone up to 28.5 on the DIC (hand calculated 26.3mpg).

The changes here in Oregon are lower average speeds (highest speed limit around here is 65 vs 70 but there are longer stretches of 45-55mph) and even though I go up a grade to get home from the city that is offset by largely coasting down it.

Lately I've been sticking with Power Service Diesel Kleen in the silver bottle that's 1000:1 ratio (1 gallon of Diesel Kleen is good for 1,000 gallons of diesel) and I use 2.5oz per ~20 gallons of fuel. Like Illinois, Oregon also has a biodiesel blend mandate which is B5.

 

I could skew your insight here a little bit because I have a newer OEM DPF that now has about 3700 miles on it.
I see anywhere from 275-400 miles between regens, heavily depending on driving conditions. Seems to be averaging right around 300-350 though. I watch mine like a hawk while driving, trying to understand what conditions affect how fast the soot % climbs.

I run Hot Shots Secret currently. I'm trying to burn up a gallon that I have left. I will probably switch to Opti-Lube XPD due to much better lubricity. This comes at a cost though, literally.

 

I could skew your insight here a little bit because I have a newer OEM DPF that now has about 3700 miles on it.
I see anywhere from 275-400 miles between regens, heavily depending on driving conditions. Seems to be averaging right around 300-350 though. I watch mine like a hawk while driving, trying to understand what conditions affect how fast the soot % climbs. I run Hot Shots Secret currently. I'm trying to burn up a gallon that I have left. I will probably switch to Opti-Lube XPD due to much better lubricity. This comes at a cost though, literally.

XPD is Optilube's general purpose additive, part of that is anti gel properties. It is less expensive to run their "Summer +" additive during the warm months and anti gel during winter. Summer + recommended dose rate is much lower than XPD as all it does is clean, lube and boost cetane. That way you aren't paying for anti gel properties you don't need during the warmer months.

 

Since getting my '19 in early March, I've used Archoil 6500 at every fillup. When I picked it up, I grabbed the current average miles between regens at 378 miles. I tried to catch it before each regen to see, and it changed to 493, then 556, then 490 (I think I had a regen recently but haven't grabbed another screenshot).

I have no idea what the previous owner's driving habits were like or if he used any kind of fuel treatment. Based purely on what I see in the regens though, it seems to make a difference. I haven't kept track of fuel economy though, so I have no input there!

I opted for Archoil after watching the Repair Geek / Lakespeed Jr. joint video on fuel treatments. From how I interpreted their results, Archoil seemed to be the best blend of cost, cetane boost, and lubricant for me.

 

What do you have to read when your regens are starting?

 

I wanted to chime back in here on a recent discovery. Through research, service manuals, and repairs, I'm still learning how the emission systems on these trucks work. I have found that the biggest flaw in all diesel emission systems, is that very few people take the time to understand them.

I noticed a couple months back that my diesel particulate matter sensor would occasionally read some erratic levels. Reading through the service manuals, this sensor has a heating element and performs its own regen before it takes a reading. So when I saw these erratic readings, I assumed the sensor was doing a regen and about to take a reading.

Fast forward to 2 weeks ago, my truck finally threw a code for a bad diesel particulate matter sensor. So I swapped it out. Nothing else has been changed.

Since swapping out that sensor, my regen interval has gone from 250 to 350, all the way up to 450 to 550.

 

Excellent info!

 

FWIW, our EcoDiesel has 137k miles on it, 100% stock. I had the intake manifold replaced as part of replacing the turbo coolant line yesterday and when I asked about how much soot was collected in the intake and on the swirl valves they told me it was minimal. Nothing like what is shown in a lot of the YouTube videos.

Why? Who knows. Could be the way it’s driven, could be something else, but I was glad to hear it was relatively clean for a stock engine still using EGR. Makes me feel better about its longevity as well. Fingers crossed…