My X has developed an oil leak which I suspect to be the rear main. It is leaking from the area above the oil filter but lightly rear (definitly not oil filter) the leak is a steady 1-2 drip /seconds with the engine on. I am monitoring continuosly while driving to ensure oil level remains adequate. Is this likely the rear main? If so how long does it take to fix (myself... done a fair bit of work, never this though) and are there any special tools required? Is there any way to 'Patch' it far a little while as I don't have time to fix right now...