22 6.7 “making oil”

[Dinky503]

A dumb question. Have they checked blow-by? That would cause rapid failure of the pcv and ccv filters. I'll assume it would screw things up causing a dpf failure too but I don't know enough about that.

I don't think they did that test. Pcv and ccv filters were replaced. They are supposed to do a compression test soon so maybe they will find something out.

 

[Deltron]

Am I misunderstanding this? I thought the diesel's did not have a PCV valve, just the CCV Breather?

Gas engines have the pcv. I just replied to both because it's true on gas or diesel. Too much positive pressure in the crankcase will oil up the filters on either. What I have no idea of is if it can cause dpf problems.

 

[Dinky503]

Gas engines have the pcv. I just replied to both because it's true on gas or diesel. Too much positive pressure in the crankcase will oil up the filters on either. What I have no idea of is if it can cause dpf problems.

The root or my issue was frequent regen. Gained enough fuel in oil over 1000miles that it plugged the whole system. Now they are dealing with the damage done by fuel dilution and can't get it to quit regens.

 

[Brutal_HO]

The root or my issue was frequent regen. Gained enough fuel in oil over 1000miles that it plugged the whole system. Now they are dealing with the damage done by fuel dilution and can't get it to quit regens.

The little engine that could...

 

[JimKIII]

The root or my issue was frequent regen. Gained enough fuel in oil over 1000miles that it plugged the whole system. Now they are dealing with the damage done by fuel dilution and can't get it to quit regens.

Another grenade in the works.

 

[2/7 Gunfighter]

I’m taking my truck in tomorrow for fuel dilution and iron in the oil. The oil analysis shows fuel dilution at 6.51 and iron at 167, which is causing a wear / 1,000 miles of 13.5.

Based on those numbers, does that seem like significant damage/wear to my engine? I doubt the dealership will do any kind of in depth inspection into what damage has already been done but I’m going to try to get them to. I guess I just don’t want them to throw on a new DPF and assume everything is fine when the oil analysis shows there has already been damage done.

My truck is a 2022 w/ 49k miles on it.

 

[mbarber84]

I’m taking my truck in tomorrow for fuel dilution and iron in the oil. The oil analysis shows fuel dilution at 6.51 and iron at 167, which is causing a wear / 1,000 miles of 13.5.

Based on those numbers, does that seem like significant damage/wear to my engine? I doubt the dealership will do any kind of in depth inspection into what damage has already been done but I’m going to try to get them to. I guess I just don’t want them to throw on a new DPF and assume everything is fine when the oil analysis shows there has already been damage done.

My truck is a 2022 w/ 49k miles on it.

167 for iron is heinously high, especially at 44k miles. These 19+ trucks tend to contribute more iron in the oil than previous years, based on all the UOA’s I’ve seen. Fuel dilution is also very high at the 6.5%.

Rotella doesn’t handle fuel dilution well at all, which is why your SAE 40 oil came out of the drain plug as basically an SAE 30. That combined with loss of film strength is likely a significant contributor to your increased iron content in the oil.

I would be inspecting your upper valvetrain immediately. Look for increased / premature wear on the tops of the pushrods, rockers, etc.

Not sure if I missed a previous post of yours or not…is your truck experiencing frequent DPF regeneration?

 

[2/7 Gunfighter]

167 for iron is heinously high, especially at 44k miles. These 19+ trucks tend to contribute more iron in the oil than previous years, based on all the UOA’s I’ve seen. Fuel dilution is also very high at the 6.5%.

Rotella doesn’t handle fuel dilution well at all, which is why your SAE 40 oil came out of the drain plug as basically an SAE 30. That combined with loss of film strength is likely a significant contributor to your increased iron content in the oil.

I would be inspecting your upper valvetrain immediately. Look for increased / premature wear on the tops of the pushrods, rockers, etc.

Not sure if I missed a previous post of yours or not…is your truck experiencing frequent DPF regeneration?

Thanks for the advice, I appreciate it! This was my first post on this thread but yes I recently noticed my truck has been doing overly-frequent regens. I had not been paying attention to the Regen frequency for a while so I honestly have no idea how long this has been going on, but in the past 2 weeks have noticed the following frequent intervals.

- Regen 1/27/26 48,843 miles
- Regen 1/30/26 48,989 miles (146 miles since last Regen)
- Regen 2/1/26 49,400 miles (411 miles since last Regen; this was the first Regen after changing oil to Valvoline premium blue 5w-40)
- Regen 2/4/26 49,588 miles (188 miles)

The only reason I found out about the fuel dilution is because I did my own oil change for the first time. I have always just taken my truck to the dealership for oil changes, but was tired of the ridiculous price they charge so I decided to start changing my oil myself. My fuel life indicator showed that it was time for an oil change at ~13k miles since my last oil change. When I drained the oil I noticed 3.5 gallons drained out, then I started paying attention to the regen frequency and sent my oil in for an analysis.

 

[mbarber84]

Thanks for the advice, I appreciate it! This was my first post on this thread but yes I recently noticed my truck has been doing overly-frequent regens. I had not been paying attention to the Regen frequency for a while so I honestly have no idea how long this has been going on, but in the past 2 weeks have noticed the following frequent intervals.

- Regen 1/27/26 48,843 miles
- Regen 1/30/26 48,989 miles (146 miles since last Regen)
- Regen 2/1/26 49,400 miles (411 miles since last Regen; this was the first Regen after changing oil to Valvoline premium blue 5w-40)
- Regen 2/4/26 49,588 miles (188 miles)

The only reason I found out about the fuel dilution is because I did my own oil change for the first time. I have always just taken my truck to the dealership for oil changes, but was tired of the ridiculous price they charge so I decided to start changing my oil myself. My fuel life indicator showed that it was time for an oil change at ~13k miles since my last oil change. When I drained the oil I noticed 3.5 gallons drained out, then I started paying attention to the regen frequency and sent my oil in for an analysis.

Yea that’s pretty frequent.
Is the truck completely stock with genuine filters?

 

[2/7 Gunfighter]

Yea that’s pretty frequent.
Is the truck completely stock with genuine filters?

Everything engine-wise is stock and I used Fleetguard oil, fuel, and air filters on this recent oil change that I did. Prior to that the dealership did everything so they used the Mopar filters. I have the full Carli suspension system and aftermarket wheels w/ 37” tires.

 

[Trash Panda]

Everything engine-wise is stock and I used Fleetguard oil, fuel, and air filters on this recent oil change that I did. Prior to that the dealership did everything so they used the Mopar filters. I have the full Carli suspension system and aftermarket wheels w/ 37” tires.

Fleetguard filters are great, so keep that up.

What are your driving habits like with the truck? Does it ever get to stretch its legs for an extended period of time at highway speed, or pull a decent load?

 

[2/7 Gunfighter]

Fleetguard filters are great, so keep that up.

What are your driving habits like with the truck? Does it ever get to stretch its legs for an extended period of time at highway speed, or pull a decent load?

I live in the city (Chandler, AZ) and it’s my daily driver so the truck gets used for a lot of short trips and not a ton of mileage. Only a 15 mile commute to my office and I only go in 3 days a week. I pull our 26’ toy hauler up to northern AZ to camp maybe every few months or so and usually take a trip back to Kansas once a year pulling the trailer, but this size trailer is nothing for this truck and it’s also not loaded down with any toys. So I would say the truck definitely doesn’t get used under heavy load enough, which I’m sure could be partially contributing to the problem.

 

[Trash Panda]

I live in the city (Chandler, AZ) and it’s my daily driver so the truck gets used for a lot of short trips and not a ton of mileage. Only a 15 mile commute to my office and I only go in 3 days a week. I pull our 26’ toy hauler up to northern AZ to camp maybe every few months or so and usually take a trip back to Kansas once a year pulling the trailer, but this size trailer is nothing for this truck and it’s also not loaded down with any toys. So I would say the truck definitely doesn’t get used under heavy load enough, which I’m sure could be partially contributing to the problem.

It’s definitely part of the problem.

The DPF is one of those items that the worse it gets, the worse it gets. Short regen cycles lead to shorter regen cycles.

That being said, it sounds like you definitely have a problem upstream.

 

[2/7 Gunfighter]

It’s definitely part of the problem.

The DPF is one of those items that the worse it gets, the worse it gets. Short regen cycles lead to shorter regen cycles.

That being said, it sounds like you definitely have a problem upstream.

Seeing as I have been using stock/approved filters, is it likely an issue with the actual DPF itself or do you think it’s possibly something else causing the issue?

 

[Trash Panda]

Seeing as I have been using stock/approved filters, is it likely an issue with the actual DPF itself or do you think it’s possibly something else causing the issue?

Take some time and read through the “frequent regens” thread on this forum. Lots of good information in there.

Driving style, MAF sensor, Air filter used, idle time, EGR contamination. Lots of things can be contributing. I know I have started using Archoil and changed my MAF sensor after reading through that thread, now my regen time is slowly getting better. I also began to pick a day once or twice a month where I take the truck out on the interstate to run the snot out of it to maintain DPF cleanliness.

 

[Brutal_HO]

Keep in mind that Air Filter part number has been superseded by 68645327AA

 

[56ram2500]

I’m taking my truck in tomorrow for fuel dilution and iron in the oil. The oil analysis shows fuel dilution at 6.51 and iron at 167, which is causing a wear / 1,000 miles of 13.5.

Based on those numbers, does that seem like significant damage/wear to my engine? I doubt the dealership will do any kind of in depth inspection into what damage has already been done but I’m going to try to get them to. I guess I just don’t want them to throw on a new DPF and assume everything is fine when the oil analysis shows there has already been damage done.

My truck is a 2022 w/ 49k miles on it.

IMHO the next time use either Fleetguard (CC2543 UOA kit) or Amsoil UOA kit (non postage paid as you can mail it your self cheaper then prepaid) this way you get TBN numbers at no extra cost, oh an they are a lot cheaper, also ditch the Rotella T6 it does not hold up well with fuel contaminated oil that you have.... You may also want to try a fuel additive like Pittsburg Max Mileage Fuel Borne Catalyst if you can find it locally so you don't have to pay high shipping cost or Archoil 6400d system cleaner followed by Archoil 6500 in every tank. Also I would take the truck out on the hwy every 10-14 days, run in for a good 45-60 minutes nonstop at hwy speeds while using fuel additives as normally that amount of time will help with passive regens on most but not all trucks... Now if you have a lot time to read there is a thread over at CF about it called Regen Frequency Solution..
: https://www.cumminsforum.com/threads/dpf-regen-frequency-solution.2590500/#replies

 

[Nick]

I always smell the oil on the dipstick and look at the color I also taste it for Antifreeze . Diesel fuel is easy to detect by smelling, antifreeze by tasting . That fill is not normal it is over big time !

 

[Brutal_HO]

 

[Trash Panda]

View attachment 93575

I can’t say I have ever been tempted to taste the forbidden milkshake lol