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My truck would regen at least one time each day since new (mostly town driving). I changed my oil/filter at 3000mi about 400 miles ago (Rotella T6) and have not seen the regen screen since. That's been about 3 weeks now and I have not seen it once. Could the synthetic have something to do with less soot accumulation (or not?).
do you know if you were a little over full prior to changing? Excess oil could maybe cause it
Good point, but yes I always check all the fluid levels when I buy a new vehicle. I bought a new Chevy Blazer some years ago, drove it home 10 miles to find no oil in the transfer case.
It's likely that your driving distance changed? Regens need about 20 minutes to complete. Did you find that you drove a longer distance post the oil change?
Not sure if the oil quantity influences regens but 13 quarts isn't hard to remember.
I was at VA Beach last week and did many short trips. My truck tried to regen several times but couldn't finish until we drove home. I haven't had a regen in about a week now. I think lots of traffic and short trips builds up soot more that highway driving. Open up that engine on the highway!
Yes, Oil has a direct influence on DPF soot accumulation. Some additives in motor oil ,when burned, create ash. Ash can clog the DPF and a regen will remove this ash deposit. Some motor oils are formulated to low ash standards such as CJ-4. Oil that says it is formulated for diesels are usually low ash formulas, but try to stick with a low ash producing oil CJ-4, as they made oil that way specifically for applications that incorporate a DPF. For a regen to disappear after happening everyday is odd though. Odd also is the fact you saw this everyday, were you driving short distances and fueling with ???? Whatever you were doing was clogging up your filter.
Yes, Oil has a direct influence on DPF soot accumulation. Some additives in motor oil ,when burned, create ash. Ash can clog the DPF and a regen will remove this ash deposit. Some motor oils are formulated to low ash standards such as CJ-4. Oil that says it is formulated for diesels are usually low ash formulas, but try to stick with a low ash producing oil CJ-4, as they made oil that way specifically for applications that incorporate a DPF. For a regen to disappear after happening everyday is odd though. Odd also is the fact you saw this everyday, were you driving short distances and fueling with ???? Whatever you were doing was clogging up your filter.
My driving habits have not changed since I bought the truck. I still drive mostly in town, still fill up at the same Shell station. The regen (or not regen) occured after I changed oil. It's possible that I missed seeing the regen screen, but before, I would see it nearly every day. Now I'm actually watching for it.
My truck would regen at least one time each day since new (mostly town driving). I changed my oil/filter at 3000mi about 400 miles ago (Rotella T6) and have not seen the regen screen since. That's been about 3 weeks now and I have not seen it once. Could the synthetic have something to do with less soot accumulation (or not?).
Previously, the oil level may have been a bit high. Also, most likely they updated the PCM to the 12B33 mandatory update which reset a whole bunch of things including changing the regen behavior a bit.
Previously, the oil level may have been a bit high. Also, most likely they updated the PCM to the 12B33 mandatory update which reset a whole bunch of things including changing the regen behavior a bit.
I haven't taken the truck to the service dept so there have not been any updates. Like I said, the only change has been the Rotella T6 oil and new filter.
Back to your original question. Is Rotella Synthetic making regens go away? Doubtful. Look up DPF on Shells website to see what they say about their synthetic and DPF systems. Maybe your oil level was too high (Did you change it last time or someone else?) and that was causing regens everyday. 13 quarts correct? I guess it is time to celebrate the regens are down to 1 or 2 a week.
I have to agree with mjrc on this one. Oil choice can have an effect, but you should only see a difference if going from a CJ-4 to a non-CJ-4 oil type. Obviously the oil that they put in the truck from the factory is CJ-4, so I don't know.
Perhaps your regen frequency is going down as your engine breaks in? I would think that as the rings seat you would consume less oil which would produce less ash. Just a WAG though, I have no evidence to back up this theory.
I have to agree with mjrc on this one. Oil choice can have an effect, but you should only see a difference if going from a CJ-4 to a non-CJ-4 oil type. Obviously the oil that they put in the truck from the factory is CJ-4, so I don't know.
Perhaps your regen frequency is going down as your engine breaks in? I would think that as the rings seat you would consume less oil which would produce less ash. Just a WAG though, I have no evidence to back up this theory.
Of course after leaving the office yesterday it did a regen. I shouldn't have been talking about it, because my truck stumbles real bad when it starts a new regen. For about 30 seconds it clatters and will not accelerate. Otherwise it runs like a spotted-*** ape.
Of course after leaving the office yesterday it did a regen. I shouldn't have been talking about it, because my truck stumbles real bad when it starts a new regen. For about 30 seconds it clatters and will not accelerate. Otherwise it runs like a spotted-*** ape.
Now that just ain't right. There should be absolutely no performance change when the engine goes into regen; the only way I could ever tell is if I cought the 10-second message on the display screen.
Something is wrong here. You should take it to your dealer to see what they can figure out.