Paper filter elements will do a lot better job of cleaning the air. Back in the early 1950's one of our competitors built a couple of Oldsmobile engines to run in the Daytona race, back when half the track was run down the beach. When they tore the engines down after one 500-mile race, the rings were worn out, and there was a residue of sand in the oil pan that had gotten through the oil bath filter and past the piston rings. The engine was nicely polished inside, though!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!