Hey I'm really paranoid when it comes to my car having something wrong with it (the scary thing is I'll have a turbo soon, eeek!) and today after running the car a bit I looked under the hood and I placed my hand about 3 inches away from the top of the engine and I felt puffs of air coming out. Is that normal or will I have to add that to the rest of the things I need fixed during my 60k service?