We're at ~2300 miles, no regen yet. We do regular highway driving and have done one longish road trip with it so far, maybe that is the difference? Dunno. That seems excessive but only compared to our experience, n=1 doesn't mean much I admit.....
If it regens and there a no persistent indicator lights, I guess all is good.
Could a batch or two of "bad" fuel cause it to do that? Just a thought, I have no idea if it can be a factor.
When we are cruising along at road speeds, and if the EGTs (exhaust gas temps) are high enough, the 3.0 constantly cleans, or oxidizes, the trapped particles in the DPF...a process called passive regeneration. IF enough passive regeneration cannot take place the GC can go through active regen, where fuel is metered into the exhaust system, before the DPF, where the fuel ignites and "cleans" the DPF.
It seems the vehicle can go through "active" regen without alerting through the EVIC. So, likely our GCs have gone through regens without us knowing.
I noticed coming home one night on the interstate, my MPGs dropping steadily even while I cruised at road speed. I wasn't far from home, and when I got out, the whole family noted the GC smelled odd. Likely a regen.
The EVIC evidently only alerts us to an impending problem only when the particulate filter is getting clogged. This happens when driving conditions do not
allow an active regen, as active regens happen at highway speeds. Higher road speeds likely aid in the regen process by allowing higher EGTS to help with the process and also keeping the under car/exhaust temps in check. (Some heavy diesel equipment can undergo stationary regens....a manual process.)