Oil Change message reset?

[HBarlow]

I have a little over 16K on mine and I still haven't seen a light telling me anything. Do the CC's do that?

I don't know. I changed my oil a second time at a little over 10k and still haven't seen an oil change required message. I performed the reset this time. Maybe EB will see this thread and answer this weekend. He is likely to know.

 

[JimLarsen]

Can anyone tell me how the oil change message is triggered. If it is by the oil condition then there way too many false readings. Oil is better now than ever before. If it is by mileage it could not know the driving conditions and therefore each message should be at the schedule of mileage in the handbook. So my question is still how does the silly work?

 

[JimLarsen]

Bob- What was the truck in shop so long for?

 

[grasmo]

My 6. 7 has been ruining the engine oil with soot every 1500-2000 miles religiously for the last 26k the dealer has not been able to remedy it or the myriad of emission problems so far. Chrysler is buying it back with a net loss of 7700. 00 to me. Should i just get rid of the dpf and egr and straight pipe it or get a whole new truck???? I have heard they are having the same problems w/ the 08's --Source --- 3 different service managers @ 3 different dodge dealerships.

 

[BobTaylor]

Bob- What was the truck in shop so long for?

You can read my saga of woe at this thread. https://www.turbodieselregister.com...2007-5/201730-inconsistant-cranking-6-7l.html

I'm leaving Memphis for Nova Scotia, dragging my Cameo 5er on 8/1. I'm hoping for the best.

Where does one get his oil analyzed? I'm a bit concerned after reading grasmo's post above, especially since mine threw a P2262 which indicates sooting of the turbo.

 

[jelag]

08 5500 just turned 27K miles... the oil change indicator has never come on...



our personal procedure is every 7500 miles on the trucks that spend 80% of their time on the highway...



Since we've never seen the message we are thinking of extending this to every 10K, do any of you go that long?

 

[sam-eye-am]

As I recall

Can anyone tell me how the oil change message is triggered. If it is by the oil condition then there way too many false readings. Oil is better now than ever before. If it is by mileage it could not know the driving conditions and therefore each message should be at the schedule of mileage in the handbook. So my question is still how does the silly work?

Maybe one of the Cummins Techs can chime in here. But, this is what I recall reading about how the oil change message is triggered:



It is based on duty cycle. Meaning there is some sort of algorithim in PCM/ECM module that calculates engine load based on MAP, Boost, Throttle %, water temp, etc. Taking a bunch of measurements like these over time, the computer can determine how hard you have been working the motor... and more importantly how much boost you have been using (and/or maybe how many post combustion fuel addition events the computer called for since the last time the computer was reset). All in an effort to guesstimate as to the mean effective cylinder pressure. It tracks how long you are at elevated ranges of higher cylinder pressures since the last time you (because through three different dealerships I have been to thus far, the techs there don't reset the algorithim) reset the computer by turning the key on and stomping on the pedal a few times. Bottom line is... the harder you work the motor... and the ECM tracks this... the more frequently you will need to change the oil according to the code they wrote to display that message.



At least that is what I remember from reading on the interenet somewhere. And, as we all know... . memories can be suspect... . and even more suspect is what you read on the internet



But, I think it makes sense. If fuel dilution or other byproducts of combustion are the concern (very likely to be more of a concern with the new spec oil vs the old from what I gather), the more time you spend at high levels of boost... the more time you spend at elevated cylinder pressures and the greater percentage of fuel you will have washing down past the rings and into the crankcase. Meaning you will get the message more frequently if you are working the motor more.



Looking at it that way... the more frequently your truck regens may have something to do with it too. I can't imagine it is good for the oil to dump fuel into the cylinder post combustion and I don't know how the Cummins engineers expect to keep that post combustion fuel squirt from getting to far into the crankcase as well. Yeah, I suppose a good portion of it may burn...

 

[BobTaylor]

That may be the way it is supposed to work, but my last oil change was at 5200 miles on 5/7. On 7/23 at 6800 miles the "change oil" message appeared. I haven't pulled anything, the few miles that I have driven in 11 weeks (really only 8 because it was in various shops almost 3 weeks) averages 200 miles per week and those were 80/20 highway/city. The service tech at Chuck Hutton Dodge in Memphis said that I needed to "drive it like you stole it" once a week to keep the soot out. I wonder which is cheaper, changing oil every 1500 miles or buying fuel for a hot rod truck.

 

[Cattletrkr]

Bottom line is... the harder you work the motor... and the ECM tracks this... the more frequently you will need to change the oil according to the code they wrote to display that message.

That leads me to believe the C+C's don't display the message.

I suppose one of us lazy bums could just go look in the owner's manual...

 

[sam-eye-am]

That may be the way it is supposed to work, but my last oil change was at 5200 miles on 5/7. On 7/23 at 6800 miles the "change oil" message appeared. I haven't pulled anything, the few miles that I have driven in 11 weeks (really only 8 because it was in various shops almost 3 weeks) averages 200 miles per week and those were 80/20 highway/city. The service tech at Chuck Hutton Dodge in Memphis said that I needed to "drive it like you stole it" once a week to keep the soot out. I wonder which is cheaper, changing oil every 1500 miles or buying fuel for a hot rod truck.

Did you reset the computer after your oil change at 5200 miles? Was it done at the dealer? I have yet to have a dealer reset it. Twice I got in the truck to drive away after having the dealer change the oil and the message was still on.

That leads me to believe the C+C's don't display the message.



I suppose one of us lazy bums could just go look in the owner's manual...

True... about the owners manual:-laf



I have wondered about the C&C and whether or not it displays that message and/or has that same bit of computer code to do the calculation. Isn't the C&C slightly de-rated? Maybe the difference?

 

[HBarlow]

08 5500 just turned 27K miles... the oil change indicator has never come on...



our personal procedure is every 7500 miles on the trucks that spend 80% of their time on the highway...



Since we've never seen the message we are thinking of extending this to every 10K, do any of you go that long?

Jim,



IMO 10k mile oil and filter service intervals are fine for a highway driven truck that runs 500 - 600 miles every day. I did 5k mile oil changes through 151k miles of private use on my first Dodge-Cummins, an '01. I started transporting when it had 151k miles and found it impractical and almost impossible to continue so extended oil changes to 10k miles. I saw no ill effects to 325k miles when I sold it. The truck has 348k on it now, still belongs to a family member. It doesn't use oil and runs as strong as it ever did. I changed the oil and filter every 10k on the '06 I had for 228k miles. Again, saw no negative effects. In medium duty applications using 15 qt. pans Cummins recommended 15k service intervals on the 5. 9 engines.

 

[HBarlow]

The owner's manual of my '08 C&C describes the oil change message and provides instructions for resetting it.



I suppose there is a possibility that the software was changed to eliminate the oil change monitor or message feature after the manual was printed but doubt it.



Maybe the monitor simply doesn't see a need to change the oil as often as in the pickups since C&C engines are detuned and have a little less restrictive emission equipment.

 

[Cattletrkr]

In medium duty applications using 15 qt. pans Cummins recommended 15k service intervals on the 5. 9 engines.

I think our manuals say 7500 severe duty and 15K otherwise. I'd have to go look again to be sure.

I sent in a sample to Blackstone that had 7500 on it. Came back fine for everything. A few "break-in" metals were high, but Blackstone wasn't worried so neither am I. They recommended going a little higher, which I will continue to do until they tell me it's enough.

I can't wait to do the DPF and EGR delete to see what effect if any that has on the sample.

 

[HBarlow]

I think our manuals say 7500 severe duty and 15K otherwise. I'd have to go look again to be sure... ... ... ... ... ... ...

Yeah, I think that's what I remember reading also.



I'll be interested in reading your lab test report after you increase your service interval.



My guess is the recommended service intervals in our owner's manuals are intended to protect trucks that are driven short distances with frequent starts and stops in around town driving as well as those that are driven hard all day, every day.



A truck that is used in commercial service like I used to do and I think you do now is brought up to operating temperature once and run at highway speeds all day except for lunch and refuel breaks. Your oil will probably look good at 15k miles.

 

[BobTaylor]

Did you reset the computer after your oil change at 5200 miles? Was it done at the dealer? I have yet to have a dealer reset it. Twice I got in the truck to drive away after having the dealer change the oil and the message was still on. =

I have to assume the dealer did it. I didn't get a message for 1600 miles and 11 weeks.