The air isn't forced thru the oil. The oil wicks up into the filter mesh and traps the dirt. If the dirt clogs the mesh completely, then it would choke off the airflow. Which would mean it's time to clean the filter.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
