I have recently had my 300tdi auto timing belt replaced. From that moment on I have had an oil leak from the wading plug hole on my timing cover. Ok it could be that my crankshaft seal has chosen this moment to give up. But I saw this on you tube . and it has set me thinking. It has been some months since I had the belt changed and I originally thought the leak was around the oil cooler. It was only after fitting the wader plug driving 70miles then removing it that I confirmed problem in timing case. Any ideas what I should do next?