Okay I hear you, but when is this noise something else. Subaru dealer has already used this example of noise on our engine. Now the sound does not go away, after a 16 mile drive, (half hour) especially when you give it some gas, sound more like a rattle. I had an independent Garage/Owner who deals in Foreign autos, he says that it's sounds more like loose Rod (piston or other I'm not sure). This car hass 22K miles under warranty till 36K I'd like this to go away before then, is that unrealistic?