I just ordered a K&N Air filter, pre filter , and a can of K&N filter oil for my warrior. Now, Im just a little confused. Do I need to oil my air filter, or do I leave it dry since ill be using the pre filter??? Any and all help appreciated

 

Always oil a gauze cotton type filter.
http://www.knfilters.com/faq.htm#10
See #10

 

Yup, you have to keep it oiled and put a filter on your filter, then keep out of dusty terrain because all that is still not enough.