I realize that everyone doesn't have this stuff around and it's kinda expensive but if you have K&N air filters on ANYTHING you may also have the cleaner and oil. I just spray the cleaner on, wait 5 minutes and wash it out. Air dry. it's made for removing filter oil and dirt, so it's the perfect stuff. If you don't have the cleaner, use some dish soap and water. The soap will soften the soaked in oil and you can rinse it out with water. Air dry (not pressure air; just let it sit) See if that helps. Good luck!