Removing an Air Maze filter

[mfarley]

Originally Posted by Tom Wesenberg

Wire mesh should be soaked in oil so it traps the dust. When dirty you can rinse in gas and reoil.

How exactly does this work? Wouldn't the oil drain out of the wire mesh and down to fill the lower cover? Is there a specific oil for this? I have a wire mesh filter but it has always been run dry. I tried a paper one, but it messed with the idle, and the fire thing concerns me.