You poor guys and all this Regen/DEF BS... thats why I will not buy a new diesel and if I did it would be deleted same day! Too much headache and hassle!
Not necessarily a hassle. My 2012 Volvo truck did require a new DEF doser valve at around 400k miles. It was a very quick diagnosis and fix and while I couldn't tell you the exact cost at the moment, it wasn't anything jaw dropping. My '16 Cascadia (Detroit DD13 engine) is nearing 450k miles and trouble free so far. Of course there is the expense of getting the DPF cleaned, but I had that done while doing a bunch of other maintenance so it wasn't an extra delay. Maybe I just jinxed myself, but so far...so good.