Its not the fuel, its also driving style, the truck never got to its regen mode program.
Happens a lot in vanhool buses in usa they never reach that regen threshold while driving and hence clog the dpf, same with all hd trucks.
Repair shops or staging stations do the regen for them.
In history, the w124 diesel benz e300d, had a catalyser in the exhaust which required that the driver literally flog a fully warmed engine to its 6000 rpm redline for atleast 2 gears.
90% of those cars were bought by old people who gingerly drove it and choked that, in worst cases those had completely clogged and bricked.
