Ok. Here's the deal. A local MX pro and mechanic recently told me that he doesn't oil his air filter unless he is riding a dusty track. He said he just uses one or two filters per day at his regular hardpack track and washes them with dish soap at home. Easy. I think he's crazy but...but he is a motorcycle mechanic and is currently ranked #2 in the region. Who am I to judge...but what do you think? Can you run a bike in ideal conditions without oiling the air filter? And why would you?