@dperez on gum I prefer to have a little lower psi and more heat. Seems to go quicker. Can adjust how much pressure on the fly with dual lance.
I am always lowering psi around doors when rinsing.
Also when rinsing or cutting in on sidewalks, driveways etc and you get next to mud, mulch, etc and dont want to make a mess it is easy to turn pressure down on dual lance.
Just this morning was doing an initial clean on a dumpster pad, which also doubles as storage it seems. Had grease flying everywhere. Made less of a mess with the turbo nozzle on the dual lance with pressure turned down some.
Just a few uses I can think of right now. Been a long last couple days.