Why do I have to apply oil to my high flow K&N air filter after cleaning it and what happens if I don't? - Quora
![K&N Air Filter Cleaning Kit: Aerosol Filter Cleaner and Oil Kit; Restores Engine Air Filter Performance; Service Kit-99-5050 - Walmart.com K&N Air Filter Cleaning Kit: Aerosol Filter Cleaner and Oil Kit; Restores Engine Air Filter Performance; Service Kit-99-5050 - Walmart.com](https://i5.walmartimages.com/asr/7a737610-3e20-4a50-9ee7-1214c9410423_2.38820da563787c8531f25e958f913705.jpeg)
K&N Air Filter Cleaning Kit: Aerosol Filter Cleaner and Oil Kit; Restores Engine Air Filter Performance; Service Kit-99-5050 - Walmart.com
![Amazon.com: K&N Air Filter Oil: 12.25 Oz Aerosol; Restore Engine Air Filter Performance and Efficiency, 99-0516 : Automotive Amazon.com: K&N Air Filter Oil: 12.25 Oz Aerosol; Restore Engine Air Filter Performance and Efficiency, 99-0516 : Automotive](https://m.media-amazon.com/images/S/aplus-media/mg/8aa0e317-464b-462e-888c-b7416a054aa7._SL300__.jpg)