I really need some advice on what could be a crucial decision. I've suspected for some time now that my wife has been cheating on me. The usual signs.. phone rings & when I answer the caller hangs up etc. My wife has been leaving the kids at home with me alot lately & has been going out with her girlfriends and when I ask for their names she always says "Just some friends from work. You dont know them." I was depressed about it last week so I rang Lifeline and got some ethnic call centre in Pakistan I think it was. I disclosed that I was suicidal. They got all excited & asked if I could fly a plane? When she goes out I stay awake all night to look out for her taxi coming home, but I only ever see her walking up the driveway. Anyways I havent spoken to her about my thoughts & suspicions. I think deep down I maybe dont want to know the truth or am scared to find out the truth, but last night she went out once again and I decided I really wanted to check on her. I put the rugrats to bed & decided to park the bike next to the garage & then hide behind it so I could get a good view of our whole street when she came home. I'm crouched behind the bike and thats when I noticed that the value covers on my engine seemed to be leaking a little oil. Is this something I can fix myself or should I take the bike back to the mechanic?