Do I need to oil this type of air filter?

So I bought a car with a K&N filter in it (non cold air). It's a flat element, more like a rippled screen if anything. It's not foam. I'm thinking about washing it out and was wondering if I need to oil this filter. I know you can use motor oil on the foam filters and just wring it out. What about this one. Should I NOT oil it, or should I buy a can of filter oil?