I have a 2001 V70 T5 that seems to be leaking oil from the valve cover. It's not a bad leak but I want to take care of it asap. Is this an easy fix for a do-it-yourselfer or would I be better off taking it in to the shop? What is involved with fixing myself or how much should I expect to pay if I let the pros do it? Any help would be appreciated, thanks.