Or if you have no other option than oiled pleated fabric, there are other filter manufacturers out there (forget who they are) that make up to an 8-layer media that does MUCH better at filtering. I run one of those filters with an FCI intake on my built 734 Raptor and it does an awesome job of cleaning the incoming air. I've never seen any dust on the inside of my intake with that oiled fabric filter setup.
One of these days K&N will figure out that 3 layers just don't cut it. Any filter you can hold up, look through, and see pinpoints of light is never gonna do an efficient job of filtering. I will never use a K&N on anything I own again! I had to dust and ruin a few motors before I learned that they (IMO) are a POS. Again, some will defend the K&N, but this is just my experience with them. And that was enough to teach me!