These Green Filters?
http://www.greenfilterusa.com/Information/tabid/116/Default.aspx
The website talks about oiling them.
Not trying to raise a stink. Just want to know if there is a reusable filter that doesn't need oiling AND works well b/c I'd buy it!
Hmm... pretty sure their claim to fame was oil less? Or maybe they have oil free version? Let me investigate...