Originally Posted by
sharpcat
Nothing above your valve covers that could leak. So basically if there was oil around that area than it had to be from the valve cover.
Most used vehicles will have minor oil leaks if it is leaking bad it is usually really simple to replace valve cover gaskets, remove bolts, remove valve cover, peel of old gasket, wipe everything down, put new gasket on, replace valve cover and tighten bolts in a criss-cross pattern making sure not to over tighten and split the gasket.
If it is no leaking fresh oil and is only stained with oil residue it does not need to be replaced.