6.0 powerstrokes are basically unrelated, they had an egr system and a catalytic converter much like a gasoline engine. 6.4's, on the other hand, did have a dpf system that are prone to failure but were early enough that they probably hadn't worked the kinks out of the technology. They were put on the market 6 years ago.
I haven't read the link yet since I'm on my phone when I found this thread. And I really don't have any valuable input, other than to say that in the hundred hours that I've put on my 32 hp kubota L3301, 3 or 4 regens, I haven't had any problems. Tractor always runs smooth as silk, no obnoxious fumes, not a fuel hog in my opinion. I've been pretty impressed, even though it's my first tractor and I have nothing other than my automotive diesel mechanic experience to judge off of. My only complaint is that it never fails, it wants to regen either late when I'm getting ready to shut down, or when I'm nearly out of fuel.
My only potential concern is for the future. Not sure the life expectancy of the dpf. And being a mechanic, it's uncomfortable for me to know that I can't access the electronics to diagnose my own machine. And the regen process requires several minutes of high, unloaded rpm's. What happens when the machine is old and on its "last leg" and asks for a regen? Might do it in. But that's a long time from now. For now, I'll just remain happy with my properly operating purchase
