Here's something you might get a kick out of and no it's not a joke they work extreamly well at filtering down even to 1 micron or less.

http://www.frantzoil.com/TOILETPAPER.html


http://www.cumminsforum.com/articles...ter/Page1.html

http://www.cumminsforum.com/forum/ge...-filter-2.html

Crazy thing is they work better than any filter on the market as a bypass filter.