Sorry I don't have a dpf but I think it works best if you consider yourself like a works rally driver. Big throttle inputs wherever possible and then lift off for big miles!!Sorry, disagree with the idea of not revving it. Fastest way to DPF issues is to drive it like your grandma would. And if you're after economy, don't assume that cruise control is the way to go on a motorway. I subscribe to the new theory of oscillating between accelleration and deceleration to get the best economy. The throttle is basically a switch. It works at maximum efficiency when it is either open, or closed, not holding a steady position in between. Which is why I get better mpg on the motorway when I come off cruise.