Things that impact regen frequency

A lot of have notice that active regen lengths can vary and of course this affects our fuel mileage. Cleaning the DPF is burning more fuel so I am proposing an expanded section in the Diesel Supplement that talks about some of the things that might increase active regens (frequency), like using oil that creates soot, additives effect on regens, or perhaps some maint items or driving habits that would increase soot and regens. Owners want to do everything we can to stretch our tank of fuel, if we have some idea (like a flow chart) of how a active regen works and also what kind of things would increase regen cycles we could work to reduce soot and cycles. I know of several folks who took the truck in for a service call for frequent active regens that might be avoided with some expanded information