Oil Change Light On At 2500???

[GTarantino]

Hi all started my truck up yesterday and on the overhead display it reads change engine oil required. . Is this necessary for a 2,500 mile truck? seems kind of soon for an oil change. any advice would be great thanks. . Garett

 

[BBeck]

Oil change intervals - computer monitoring

Hi Garett:



You aren't the only one. Refer to the other thread below.



https://www.turbodieselregister.com/forums/6-7l-engine-transmissions-2007-5/184886-6-7l-no-schedule-oil-changes.html

 

[MHudson1]

Something is really up with the oil change interval. I have 6000 miles on my truck and have had the oil change message came on at 2100 miles, dealer reset, came on again at 3710, dealer changed oil, now its on again at 6070. No idling, trips at least up to 55 mph for 30 minutes or more, tow a 12500 lb trailer a quarter of the time as well as hauling lumber and building materials. It can't be right having to change the oil every 3000 miles or less. Anyone have a clue what's up?

 

[MHudson1]

Just bumping this to the top. I can't belive no one has the same thing happening???

 

[TConnolly]

My dealer got the "Fix All Software update this morning and is waiting to install it as soon as the TSB with the instructions becomes available, it was expected today but was not available at 3pm eastern. Hopefully tomorrow am!







I'm going to post this in several threads as, a lot of inconsistent information is circulating.







The 6. 7L PCM gathers information from sensors before and after the DPF, calculations are preformed using that information along with idle time and duty cycle to determine when to go to 80% full, at 80% regen is triggered and will occur if the vehicle meets the proper conditions, If the conditions are not met and the vehicle reaches 100% full the PCM de-rates the engine and dealer service is required.







Basic information you need to know to understand why we're having problems with our oil change interval and DPF. Duty cycle is calculated and recorded in duration and percentage (25% of the time at 90%, & 15% of the time at 40%, & 60% of the time at idle). Idle is measured at 10% or less throttle pressure.







Common sense dictates that city driving would account for more idle time than highway, Not true because of the torque our engines make they require little peddle to hold Hwy speeds and register high idle time.







High idle time is considered extreme duty and triggers the oil change interval and regen cycle.







In my case the DPF was never full and the oil was not bad at 2k / 3. 4K / 7. 5K, the PCM just thought it was! Last week when TSB 18-033-07 was loaded in to my PCM and a manual burn was preformed it only lasted about 50 miles.







The new software is suppose to address the original issues and should cure the problems that we are experiencing.







As mentioned in a previous post suggesting that regen will occur at idle, do not confuse idle (10% or less throttle) with standing still. Use common sense if the regen cycle occurs standing still you could catch the grass on fire and rune your day! If you are old enough to remember the high number of police cruisers that burned to the ground while parked on the road side when gas engines first got catalytic converters.







This information is provided based on my research and my conversations with dealer service personnel, regional Reps and STAR tech’s. I believe the information given me is true, ultimately time will tell.