For those who use a high pressure hose for cleaning their car (either directly or with a foam lance) and particularly if you do so using tank water, do you use an additional filter to keep grit and crap out of the high pressure cleaner and off your car?
I have a gerni which has a small filter on the inlet but I'm wondering whether I should put something more comprehensive on the hose between my water pump and the pressure cleaner. All I've been able to find so far is an inline filter at bunnings but it's designed for polypipe & garden watering systems (I could adapt it for this use with a few fittings) and the filter on the gerni itself is finer anyway.
Surprisingly not much has collected in the gerni filter; I thought there'd be more crap in the water which traverses my roof and gutters before reaching the tank.