Why men don’t write to Dear Abby

Dear Abby,

I've never written to you before, but I really need your
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 but if I answer, the caller
hangs up.  My wife has been going out with the girls a lot
recently although when I ask their names she always says,
"Just some friends from work, you don't know them."

I always stay awake to look out for her taxi coming home,
but she always walks down the drive.  Although I can hear a
car driving off, as if she has gotten out of the car round
the corner.  Why?  Maybe she wasn't in a taxi?  I once
picked her cell phone up just to see what time it was and
she went berserk and screamed that I should never touch her
phone again and why was I checking up on her.

Anyway, I have never approached the subject with my wife.
I think deep down I just didn't want to know the truth, but
last night she went out again and I decided to really check
on her.

I decided I was going to park my Harley Davidson motorcycle
next to the garage and then hide behind it so I could get a
good view of the whole street when she came home.  It was at
that moment, crouching behind my Harley, that I noticed that
the valve covers on my engine seemed to be leaking a little
oil.

Is this something I can fix myself or should I take it back
to the dealer?

Thanks,
Bob