In the latest and greatest Diesel Power magazine, they have used a power adder chip on a 6.4PSD. They can get 3 WOT bursts with the truck before it goes into regeneration mode. Can see a DPF lasting a long time with that sort of abuse.
We had one set at 82 mph, 6 minutes after startup. Think this guy lives 6 minutes or so from the freeway?
(edit: didn't have the fingers lined up on the right keys and had 91 mph listed originally)