No DPF eh? I guess that means no regen cycles either?
Originally Posted by PiperOne
It's miles...not km. Bought it in the US. To be fair and open...this engine's emission system has been modified. It does return to stock form if it goes to California or other emission hyper locations (about 45 mins to change it back over). About 15% of these miles are with the unit doing regens etc but the rest are more like an LBZ...just EGR and DOC...no DPF. It was ugly oil samples (and fuel mileage) from another LMM that convinced me this unit needed to be modified. Based on those samples I would have used conventional oil and likely 10k mi oil changes...and found other ways to deal with the cold start n go situatuons. I'd have no problem treating the newer DEF Duramax's the same as this one...20k. That all said..still happy with the results and I think it's decent proof the Dmax does not need short "oil is cheap" type service intervals.