So, my oil level has been rising in my truck...and my truck is in the shop now. So, the last 3 oil changes my oil level went up about 3/4 of an inch to an inch in 4k miles. I talked to the service manager of the dealership, and they had the oil checked at a cat dealer, and it came back with 7% fuel in the oil. He said that the oil was fine....really, how is that I said...he said that the person who tested it said that their own truck was making 8%, and that they just watched it...so what is acceptable according to chrysler...he said less than 5%...they are going to keep the truck until they can determine what the next move is to take care of the fuel dilution in the oil.....
I should also mention that my truck has 32k on it right now, and has just a touch under 600 engine hours on it...tow with it about 20% of the time.
I also have P0191 engine code that came up right before it went in...probably not related, but mileage sux...
so my friends....what is normal...I honestly think it should be less than 2% max...
What are your thoughts....
and yes, it is stock...really want to eliminate the emissions, but I want the warranty, and I also have a smog license(conflict of ethics)....
right now I wish I had my trouble free early 07 back...well almost trouble free, it was an auto...

 

If going into regen to often, then more fuel will work its way into oil and cause dilution. Procedure for testing includes fuel system test and driving vehicle to make sure soot level does not buildup more then 4 grams of soot in ten minutes of driving at steady speed. Dealership scanner needed to monitor soot level while driving. Cruise control can be used. If over that amount then excessive soot loads are causing more regens then required, this causes more fuel to get into oil. Often you will see this in overhead display, DPF 100% full power reduced see dealer. Most times the EGR valve or injector can cause this issue. Do you have any aftermarket parts installed such as fresh air intake system? If yes then they need to be removed before any diagnostic tests can be performed. I never fill the 6.7 to top of fill mark when performing oil changes(12 quarts), I leave 1 quart low or (11 quarts) that will put it between the add and full mark which is the safe zone. Only because fuel will always work its way into the oil system during every regen on the 6.7. It is normal to raise oil level 1 quart in 3,000 miles on a 6.7 CTD. Usually a P1451 and P242f codes will set when there is issue with regens and excessive soot loads. These codes will disable the regen process and if not repaired and you continue to drive vehicle you will see other problems start to develope, such as cracked DPF with black smoke out tail pipe, reduced power and no start condition if dpf becomes completely restricted it will need to be replaced.
P0191 possible injector issue, injector return flow test should be done. Test should confirm if injector is causing your excessive fuel in oil issue.

 

I just looked at my Blackstone Lab report and it shows less than 2% is acceptable. Don't really know if this is for the 6.7's, but I would guess it should be?

 

well, so far it is 100% stock. I am not totally confident of the service department there, but will see what happens. Maybe they can figure it out. I take it your a tech at a dealer...

 

well, it has been 8 days at the shop....now I am getting told that another oil sample needs to be done at the next oil change....this SUX

 

so, I took it back in for another oil change. They did another analysis on the oil, and it came back at 5.3% in about a 3300 miles. The service manager doesn't see a problem with it, but then he is not making the strokes on it.
I seem to think that ma mopar....or fiat is not wanting to keep us happy, or tell its truck owners that we own a truck that is overly emissioned to death...
anyhow, what is the next move????
The truck now has almost 36,900 miles on it...

 

How often does the oil change message show up in the EVIC?

This is between oil changes?

Another item what is your driving cycle. Do you do mainly city driving a lot of short trips or long distance driving with the truck? Your driving style will affect the amount of regens the truck is doing and the amount of fuel dilution that is occurring.

I believe that Ram and Cummins specify that you can have between 5 and 7% fuel dilution in the oil but I would change at 5% max. When I was stock this was around 3300 to 3500 miles when driving in the city on my 08.

Jim W.

 

I'm not exactly sure why but it seems the manual trucks are way worse than the auto trucks even though my son had the dealer install a 2 speed high idle at new. My son's manual was getting oil change messages at 2500KM (1500ml) and the Amsoil was like dirty black water and way over full, the dealer told him to ignore the messages and do it at the regular change interval. It did start throwing codes and had reduced power at times, the dealer changed out the O2 sensor twice and when questioned about it "making oil" the first two times they just pretended not to know what that meant and said he must have over filled it each time. The third time when pressed about the over full oil they did an injector check and offered to put it on the dyno but said my son would have to pay for that if the results were ok. We still have the print out and it's impossible for those results to have come from that truck. The truck continued to make oil and throw codes so I decided to remove the intake pressure/temp sensor, it was so plugged we couldn't clean it properly and had to replace it. This prompted us to remove the intake manifold to see what was going on, the grid heater was almost completely sealed off with ***** of carbon so large they couldn't fit through the grid. The intake itself was extremely plugged and there was black raw fuel running back down the boost tube collecting at the outlet of the precooler. Chrysler should not have sold these trucks like this for use in cold climates, they are a disgrace and I'm surprised there are not all kinds of people suing them. He has almost 200,000km on the truck since deleting, the oil stays clean and at the correct level. It has never thrown another code since.

 

Has anyone had their trucks checked to see if any of the injectors are leaking?

I think over on CF, Chrysler bought back a truck for making oil...

 

I think that answers your question. As for Chrysler buying back trucks, they can't buy all the trucks sold in cold climates back they should at least honor the warranty though. And a lot of the carbon fell to the floor as I removed the intake.

 

Missed it... Sorry...

Man, that looks NASTY!!!

 

an chance you have a link for that over on the CF?
Man, that grid looks bad...I would hate to see that look like that on my truck...

So here are my driving habits...
25 mile one way trip to work (7 of which are freeway)..I am a high school auto shop teacher....5 days a week...
not much idle time at home, but I do let it idle for about 30 seconds in the am in the winter....
I tow a car trailer probably 2-3 times a month...so I do work it....
Probably the worst thing I do is that I don't speed or go fast....I am a believer of torque...and staying in the torque band as much as possible for MPG's...which this truck does not get for beans....

 

Not sure if you are asking me for a link or not, but I only post on DTR about our trucks.
Driving comparison.. This truck is a work truck and is only used to drive at 65-70mph (when conditions permit) for 6 to 8 hours at a time usually pulling 2 or 3 axle goose trailers loaded. It does do a ton of idling time but has a high idle and a winter front for the cold weather. that picture was taken at around 30,000km, less than 20,000ml. The truck was generating oil change messages at 2500km (1500ml) and the oil was over full and past ready to be changed. The truck is still driven the same and has around 200,000km on it since the "clean oil mod", it's done it's time and there is a 2013 on order.

 

I wish I could do the clean oil mod, but we have emissions here..
and yes I was, any chance you could pm me with that info.....

 

My EVIC is saying "oil change due" see dealer. it is only about 1500 miles since changed. also oil level is a bit high on the stick.

heard of diesels "making oil" and from posts fuel is getting into the oil. what damage happens in this case?

how expensive is having oil analyzed? thinking of doing one, how much oil do I need to have them save?

want to do a short trip this weekend, about 300 miles round trip. should I change it before this jaunt?