Passive regens how often.

[uncleal13]

My past DD15 and my current DD16 in the winter time, hauling the same as you, do the following.
Almost daily: a short three minute regen at close to 1000F
Weekly : a long 2-1/2 hr 800F regen, if I'm doing a lot of short hauls that day it can take all day to fulfill.
Monthly: an intense 1120F regen for 20-25 mins.
In the summer I can go almost a month and not see any at all as the DPF temps can hit almost 800 degree climbing large hills or in strong winds so I basically get a free regen.