pressurizing cabin of vehicle

Marcas turn the fan up to hi and on recycle helps keep the dust out heaps.

Having just finished a long and dusty trip , i can see where you are coming from . In the cleaning up of the vehicl , i looked to fined where the dust was coming in , and then to block it up . The main place was the vents at the back of the car . When i took them out , you could see that a lot of dust entered there , so i would start there , and then try to find anwhere else that you can block up . Why go overseas when you can ExplorOz
ERROL

If you have a big air compressor an air blower gun helps with the clean up.

It can be stopped. I have been travelling for 48yrs in the bush, before AC came along you needed the vent open. Even in winter it had to be open to stop dust. Now travel with the flow through on AC or not. With the new vehicles keep the flow through vents closed by tapeing them up. cruisers and nissans have them behind the rear side windows, utes behind the cabin jeeps when you open the rar side doors. even block the drain holes in the back door/s.
Dont travel TOO CLOSE to the car in front shut the vent or put the ac on recurculate when some one comes toward you.

Side winds can create a problem and create a vacume if the lee side window is open, watch around the the rear tail lights foe a void, and if so full it, ie jackaroo.
check the seals for tightness. when travelling with the wind dont open the doors till the dust passes you

cheers Jol Fleming

my jeep and ford outback dont suck dust, neither did any of the 20 or so cars i have had, vent open and flow through blocked off
good luck
jol

Marcus all I have ever done is just run air con that seems to keep the dust out.I use both settings recycle and the other one.
All the best
Eric
www.capeyorkconnections.com.au
4wd Tag Along AdventuresCape York Connections

unless the conditions are dusty ie travelling behind a moving vehicle use fan on fresh air setting...this keeps inside of cabin pressurised.
Recirculating and the vehicle can have a negative pressure at rear and positive pressure at front...this has effect of allowing air (with dust) to move into cabin area.Wow! am I cute
If yer ain't fishing, Yer ain't livin
Richard

Amen to the above...cars are a bugger to clean if they are "pretty" ones...keep everything shut and keep that fan going flat out...use air cond if its too warm but don't open anything ! You may be interested in my 4 door Bravo ute (now traded) - had a Flexiglas canopy on there - real problem for dust coming in the tailgate area - trying to seal it is hopeless because outback dust makes talcum look coarse- I put a scoop on top made out of 50mm black plumbing fittings - even extended it to the front of the roofrack when on with 50mm pipe...forward travel air flow keeps the pickup very clean. Don't know how the canvas rear blokes can survive - when they pull up, everything in the back is solid red.Get me outa these suburbs !