In the nice weather the other day, I inspected the engine and passenger compartment air filters on the '01 LW300.Both were very choked with leaves and all manner of road debris. The engine filter cleaned up nicely after vacuuming with the trusty shop vac. Cabin filter needed to be replaced. One parts place didn't know what I was talking about so I was about to go to Saturn parts. On a lark, I tried the local CarQuest dealer and they had the filter for $12.
Nice that the HVAC system uses a filter. One more thing to plug up and change. Still if you have ever tried to clean a heater core or evaporator that became plugged with pine needles or leaf smutch, changing a filter is far preferable.
Washed the car too. I bought a 1500psi pressure washer last year from Sam's club for $120 (iirc?). This is the greatest thing since sliced bread for cleaning brake dust off of the alloy wheels. Curious that the front brakes seem to make far more dust than the rear. Both are disk but I guess that the system is balanced to give more braking power on the heavier front wheels.
Oppie