My dads friend changed the cambelt and noticed that the head gasket is slightly leaking. The thing is, my dad an ex mechanic looked at the area when we got the car home and said it's nothing to worry about, there seems to be no sign of a leak. Its prob a build-up off oil.

The car is a 2004 audi a3 1.6. It still has a warranty (all component cover-extended) Should i take my car in and get it checked out or take my dads advice?

Thanks for replying to that guys! Im just booking it in now...may as well book it in i guess. Paid enough for it!