Fuel in Oil
 

So my father bought an '11 cummins not to long ago, and its got about 2500 miles or so on it. He checked his oil and found it to be awfully high, come to find out theres fuel getting in his oil. Anybody heard of this problem before and could shed some light on it?

Most likely it's the DPF filter going through the "regen" cycle,I have to change my oil every 2500 miles for the same reason.

Well hes only put about 2500 to 3000 on and he replaced the oil last weekend and this weekend its already a quart high he said. He wants to delete his emissions anyway, and has a dpf delete pipe just isnt sure what programmer he wants. So if he pulls his dpf would it clear up the problem?

this happens alot with the dpf trucks.:hellox:

That is some BS:td: They all do that!

I don't understand how DPF regen puts fuel in the oil. :humm:

Excessive EGTs to get the DPF hot enough to clean like a self cleaning oven. Larger trucks and the 2011+ Dmax engines have an extra injector in the exhaust to trigger it but the 07-10 trucks and 6.7 Cummins engines all rely on excessive amounts of fuel and other means (like a throttle in the intake) to increase EGTs to clean the DPF.

Burn more fuel to reduce emissions. That makes my head hurt. :argh:

Wow, i knew what the fords and GM did but i didnt realize thats what dodge did. Glad i have a 2nd gen 24 valve! The truck is going to the dealer tomorrow and i'll have to wait and hear how the dealer "fixes" the problem.

Yeah only a politician would think that makes sense....:scare2:

Yeah they all did it from 07.5-10, Chevy got the bright idea to move an injector and what is basically a sparkplug into the exhaust to burn up the DPF remotely. I am unsure if the Ford still uses an engine based regen, I know for sure the dodge does.

The dealer might reflash the ECM so it uses more throttle (make the engine run richer) instead of dumping more fuel. But the newer trucks like to make oil...not uncommon to see fuel percentages above 5%.

You want to see more nasty stuff...look at your EGR...

http://www.dieselpowerproducts.com/i...ootbuildup.jpg

Supposedly this engine only had 600 miles on it..if that is true...YIKES!

i could be wrong but isnt dodge advertising that the 2011 trucks DO NOT use DPF??
was looking on all different websites camparing the new d-max and the new stroker, and one big advantage was that dodge did not use the DPF?

That would seem like a candidate for fuel dilution, and absolutely the wrong thing to do - just load up the DPF even faster. I believe the way this "supposed" to work is, they inject a very small bit of fuel on the exhaust stroke, so it burns in the DPF. I still don't see how you blame regen for fuel dilution, unless the amount is out of adjustment way too high for some reason so it is washing down the cylinder walls. That would be very bad for the oil and the rings.

The old standard leaking injector(s) is always a good candidate for this problem, anyway.

That was Polly DEF, diesel exhaust fluid, not DPF. The 6.7s very much has a DPF.

Only the EPA would come up with injecting piss into the exhaust to reduce emissions.

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and thats a clean egr i have seen them 10x worse then that

I was just totally speculating, it could be the other way around. I know in theory it shouldn't effect the oil level in the engine but in practice I think it is far less successful then they hoped. I know with the Fords it is VERY common for the 6.4s to "make oil." Could just need to reflash to get the fuel amounts in check. There is a TSB floating around somewhere that Ford claims up to 4% fuel is acceptable.

I can only imagine how nasty a 200k mile EGR looks...

That's what we initially thought was a leaky injector but doesnt sound like it anymore.

I recently pulled up a video, don't recall address, on dpf filter. Went to the old timer in diesel engine building, guess the dpf sensor goes off, dumps fuel into the dpf, burns it off at around 1400 degrees, then dumps the waste into your crankcase. Some engineer was thinking there, huh? :scare2: He suggests if you don't do the deletes change your oil as as possible after you get the regen message! and most drivers will have to replace the filter between 40 and 80k miles at a $2500 dealer cost!!! The savings in fuel and that savings alone paid for my tuner, parts, deletes, new shocks, springs, and other upgrades. :jump: I used to think aircraft engineers where nutcups but apparently the company I used to work for didn't hire all the lame brain engineers, Dodge picked up a couple as well. :rocking:

New Rumor/Myth: Dodge Owns Cummins!!
 

Just FYI, the engine to include emission control systems is not a Dodge thing - it's a "Cummins" thing. And an "EPA" thing.

I may have to mortgage the house but I have to do those deletes.

Yeah, I feel my truck is on a timer for destruction. I need to do it quick! But, the strangest thing is, I'm at 41k miles on mine and never even had a glimmer of a DPF regen message. I tend to drive it alot in town, but when I'm on the highway out of town somewhere I give it hell. Plus, my truck was reflashed right before I bought it, so those factors may have kept me out of trouble with the truck. I've had oil generation, but that seems to happen with all of them. IDK, but compared to all the horror stories I see and hear about, I think I picked a winner. No major problems yet :argh: (banging the head on wood instead of brick)

Ya i dont think he gets a light either. the only time he has really noticed is the first time it regenned, it ploomed out white smoke, than I was standing by the exhaust and it was stupid hot. Other than that its never said a thing.

God damn EPA makes getting a new truck unenjoyable.

Originally Posted by BIGHORN08
Yeah, I feel my truck is on a timer for destruction. I need to do it quick! But, the strangest thing is, I'm at 41k miles on mine and never even had a glimmer of a DPF regen message. I tend to drive it alot in town, but when I'm on the highway out of town somewhere I give it hell. Plus, my truck was reflashed right before I bought it, so those factors may have kept me out of trouble with the truck. I've had oil generation, but that seems to happen with all of them. IDK, but compared to all the horror stories I see and hear about, I think I picked a winner. No major problems yet (banging the head on wood instead of brick)



Interestingly enough, I have never gotten a regen message either and I did have to take it to the dealer to do the dpf/egr/turbo clean and computer flash at about 28K. Is there a reason the message isn't showing up when a regen occurs? I know that when I had to take it to the dealer to get that stuff done, all I got was an engine light and poor running engine.

My guess would be the regens were not occurring or not occurring properly and that's why your turbo, EGR etc got fouled up.

It is clear now that the people who bought late '07-08 6.7s were guinea pigs for the new Cummins emissions equipment. Some had no problems, many had BIG problems related to the DPF/EGR systems. This is typical for most new technology, but unfortunate it was not better tested before being sold to the public. It seems most of the bugs have been worked out with better software parameters and other things I'm probably not aware of.

I'm just sneaking up on 16 K miles and have had 4 regens. All were in winter (more idle time to warm up) just hate all the crap going into the oil.

So since my last post, the trucks been in the shop a total of three times, and even the dealer is lost. theyve tried three different tunes..still not making a difference, sadly my father is refusing to jump on the wagon and delete his emissions.

That's quite a gamble. But of course, I would wait til the dealer gets me closure too before jumping the gun and doing anything. When I had some recall work done on it, it made me think twice for a bit about doing the deletes. But then again the price of diesel had me by one ball and the dealership had the other. Why not get both back at the same time:duh3: I actually cancelled my Chrysler contract after 9 months (before I did the deletes) and got 1400 back to go towards the truck loan.

The dealer even said it was the DPF but all they have done is try different flashes. still diluting the oil.

My drove my dads 2010 6.7 cummins a few times with a light foot, and the best i could get out of it was 15 mpg.

Now on his 2011, the best I could come up with was 13.

Attachment 23739 heres a pic of one another member posted if i remember right it was under a 100k and the motor needed to be rebuilt i could see why

they get in bad shape with the soot that is for sure.:tu:

that just gives you guys that dont know what the regen is doing something to think about. worried about warranty ya warranty is good but what about at a 100k when your warranty is over and your motor is trash? all because you left the emissions when you could have saved it and it last 300k. thats the way i see it if you guys really look. most the trucks that are having probs have the emissions. and 90% are exhaust probs or turbo probs just throwing it out there

I had about 12,000 mines on mine when I did my deletes, it looked about like that picture. I think Dodge/Cummins were in such a hurry to be the first to meet the new emission standards, that they didn't do enough R&D on their smog crap...

diesel dump into crankcase
 

I feel lucky to have a guy here locally that worked on the shop floor for Cummins and Pacar in Seattle. This guy is a walking encyclopedia of diesel knowledge/ He told me when I asked him about the regen message that: system builds up soot and diesel particulates then a processor dumps diesel fuel in the dpf which is then signaled to fire up to 1400 to burn it off and the reside that is left then dumps into your crankcase. He hates that system and argued with many an engineer on how crappy it was. He recommend that I do an oil change every time I got that message of "regen" on the overhead. didn't matter if it was 500 miles since the last one. He feels the mods and tuner are a much better option that take full advantage of the diesel engines capabilities and it will keep your engine a lot cleaner. The emmissions and other things done in the last 20 years have done nothing to help the engine perform better and ad to it's longevity. I did my mods about the time I got the "replace dpf" message, seems depending on your driving habits it fills up and burns out and has to be replaced after certain number of cycles at a cost of "$2500" quoted by the Dodge dealer!!! That paid for my mods and tuner and the mileage is a bonus. :c: