Don't you guys ever read? Those are cellulose filters. Not that I am judging, still might be something someone would want to run.
When LSI began working with the Frantz line, the company studied 3rd party lab reports, reviewed Frantz company testing data and conducted internal baseline testing. With the Frantz Filter System, the oil clean-up is achieved by filtering the engine oil from the bottom of the unit through a 4.25 inch dense cellulose based filter media that is re-circulated back to the engine. Cellulose is a natural polymer and is a great material for filtering due to its high strength and random fiber size. The Frantz Filter maximizes effectiveness due to this specially designed and tested cellulose media and the correct degree of tautness around the filter’s core.