Do the filters in this catch can need to be replaced at a certain mileage or are they good for the life of the can?
Edit
n/m found it on the site in the Q/A
How often will I need to change or clean my filter element?
Answer: The filter element is a very important part of this catch can system and should be changed whenever vacuum pressure between the filter and the PCV valve decreases by 2 inches of mercury or if you have driven 5000 miles after installing or replacing the filter. Keep in mind that oil containing a high level of contamination will clog any filter media at an accelerated rate. Filters may be cleaned using isopropyl alcohol.