How often would you say the V2 filter needs to be replaced?

 

Buy a cleaning kit and clean it every time you change your oil. It's very easy(besides getting to the filter). The kit comes with two bottles. The first is a cleaning agent you spray on the filter and let it soak through for a few minutes. Then rinse the filter really well with clean water. Allow it to completely air dry. The second bottle is a filter oil you just spray on the filter and you are ready to go. Don't forget the inside of the filter when you are cleaning, rinsing, and oiling. I think those filters are supposed to last near forever.

 

Buy another filter and the cleaning kit then just rotate filters