I have had my 2010 for almost exactly a year. The truck has been making oil since it was new. Until recently, the oil would never get more that about a half inch above the full mark on the dip stick. I had the oil analyzed about six months ago and the analysis showed about three percent fuel dilution. Recently when I checked the oil it was higher on the dip stick than it has ever been. This time the oil was about an inch over the full mark. I took another sample of the oil and sent it in for analysis and found out now there is 7.4 percent fuel dilution. The truck is not showing any codes so the dealer told me there was nothing they could do. The truck is used to pull a 15K 5th-wheel camper once in awhile and to pull my tractor on a 24 foot trailer occasionally (about 10K pounds). The rest of the time I use it as my daily driver (about 50/50 highway and town driving). The truck has about 17,000 miles on it. It is my understanding that it is fairly common for the 6.7 engine to get a small amount of fuel (1 to 2% dilution) in the oil. However, 7.4% dilution (about a quart of diesel fuel) can not be good for the engine. I don't let the truck idle except at stop lights, etc.

How do I find out what is causing this problem? My guess is it is the injectors but I guess it could also be the rings have not seated yet. What I don't understand is why it is getting worse unless it is a faulty injector that is getting worse. Unfortunately, there are no good diesel mechanics at the dealerships in this area, at least none that I am aware of.

I sure would appreciate some guidance from you guys that have had some experience with this problem.

 

I have heard when they do a regen fule gets in there.

 

Normal for an all stock truck to make oil like this. The amount of fuel in the oil has to do with the number of regens. The only thing you can do is delete it.

 

Thanks redlineguy and spooler for your comments. Is it normal for an undeleted 4th gen truck to have 7% fuel dilution? I got the impression from earlier threads on this topic that most of the 4th gen trucks were not having a problem.

 

May want to send the question to Cummins and see if they'll answer it (they may just defer you to dodge but it's worth a shot).

http://www.cummins.com/cmi/navigatio...ce&menuId=1005

 

Thanks dmurdock. Several years ago, I worked for Cummins although I don't know anyone there now. However, I did contact a person that works in R&D for Cummins. He gave me some tips on where I might get more information but so far that hasn't worked out. However, I may try calling some other people at Cummins if I can't get the information I need to resolve this issue.

 

In 5000km/3000 miles my 2010 3500 has made over a litre! 17000Kms on the truck. Dealership has sent away an oil analysis.

 

Typollon2, please keep us posted about what happens after they get the results of the oil analysis.

 

I had this problem as well, I don't know if it was a quart, but i could notice it on the dipstick. At 18,000 miles i did the deletes and haven't had a problem since( I'm at 31,000 miles now). By the way, this was the single biggest issue that pushed me to do the deletes so early.

 

My truck is making oil too. I changed the oil as soon as it was delivered (1200 miles on the clock), and just changed it again at 5000 - it was about 1/2 quart overfull.

I intend to keep to a 4000 mile change schedule to keep the dilution to a minimum. I do a lot of short trips so that may be the reason it's building so fast, but I don't mind changing the oil soon. I bought a 55 gallon drum of rotella and a case of filters from genos, so anytime I need to change it, all I need is a few spare minutes.

I have debated on unhooking the EGR to see if it makes things better, but like doing the deletes I worry about warrenty.

 

Dealership said oil analysis came back OK??????????? So I will monitor it closely. Not much else I can do.

 

Checked my oil today and it was a quart over full in just 1,300 miles since the last oil change. I drained a quart out of the crankcase and will continue to keep an eye on it. The EVIC will probably give me a change oil message soon.

 

check your dip sticks before thinking its correct guys.

THIS SERVICE BULLETIN IS ALSO BEING RELEASED AS RAPID RESPONSE
TRANSMITTAL 10-073. ALL APPLICABLE SOLD AND UN-SOLD VIN's HAVE BEEN
LOADED. TO VERIFY THAT THIS SERVICE ACTION IS APPLICABLE TO THE
VEHICLE, USE VIP OR PERFORM A VIN SEARCH IN TECHCONNECT. ALL REPAIRS
ARE REIMBURSABLE WITHIN THE PROVISIONS OF WARRANTY.
SUBJECT:
Incorrect Engine Oil Level Indicator
OVERVIEW:
This bulletin involves inspecting the engine oil level indicator and replacing it if found to
have an incorrect indicator end.
MODELS:
2011 DJ/D2 Ram 2500/3500 Pickup
2011 DD/DP Ram 3500/4500/5500 Cab Chassis
NOTE: This service bulletin applies only to vehicles equipped with the 6.7L
Cummins Turbo Diesel engine (Sales Code ETJ).
DISCUSSION:
6.7L Cummins Turbo Diesel engines are equipped with an engine oil level indicator that
identify a “Safe” region on the end of the indicator. Some vehicles were equipped with an
engine oil level indicator end that had “Add, Cold, Hot, and Do Not Add” increments on the
end. These engine oil level indicators will need to be replaced.
SYMPTOM/CONDITION:
Customers may state that their engine oil level indicator end has “Add, Cold, Hot, and Do
Not Add” when the Owner's Information indicates that it should have a “Safe” increment on
the end of the indicator.
DIAGNOSIS:
Inspect the engine oil level indicator. If the engine oil level indicator has a “Safe” region on
it, no further action is necessary. If the engine oil level indicator has increments indicating
“Add, Cold, Hot, and Do Not Add,” replace it.
NUMBER: 09-004-10
GROUP: Engine
DATE: November 11, 2010
Fig. 1 Engine Oil Level Indicator
1 - Standard 6.7L Cummins Turbo Diesel Engine Oil level Indicator With Correct End
2 - Incorrect 6.7L Cummins Turbo Diesel Engine Oil Level Indicator
PARTS REQUIRED:
Qty. Part No. Description
AR (1) 68005326AA Indicator, Engine Oil
REPAIR PROCEDURE:
1. If the engine oil level indicator has increments indicating “Add, Cold, Hot, and Do Not
Add,” replace it.