hi all, First post so not too sure what to say. I own a merc clk 200k sport and last month or so ive noticed what can only be described as a Whiring noise coming from what sounds to be the top right hand side of the engine (right hand side when at front of the engine). This only occurs when I am driving and in drive. I can't pin point where it is coming from as sound doesn't occur when in neutral and rev or when I've got hand break on and accelerate. The sound speeds up faster you go and slows down the slower you go. https://clyp.it/i0nqicxt I have attached the audio so that might help.