so I got new valve cover gasket and not to sure if I need them, I notice some oil on the front exhaust manifold. The thing is not am not to sure how old this oil is? I just got the car and could not drive it anymore due to the water pump failing. I just want to make sure I am not wasting my money replacing gaskets that are fine. Here is a picture of one the gaskets. Also when replacing the coolant elbows I only got 3 washers with the new tensioner, how many are suppose to come with it?