I`ve just bought and received the RSK from Justin, and i was wondering whether to oil the filter or fit it dry. I seem to recall that the Subaru`s had problems with the air flow meter going south after they had had oil drop onto them from a certain panel filter which contained a small amount of oil. I raced moto-cross for 10 years and we always oiled the air filter to catch any dust or rubbish and this certainly worked. I wondered if this might apply to the RSK filter, or forget it and fit it dry?. Regards. SIMON.