Hi I am a new member and I have owned my 2010 challenger RT since 2011 and It has been dealer maintained since I bought it new. The air filter has never been changed since I have owned the car, It has 17k miles on it and I know the dealer has never changed the air filter so I asked my son to check it and it had a a lot of oil on it. I noticed a hose going to the engine from the air filter box. I want to know is this normal and if I take it to my dealer what should I expect my dealer to tell me what is causing this. Also it just had the timing chain recall done on it a couple weeks ago. Sorry if this is posted in the wrong spot but I didn't see a Problems/issues section.