I have had the same ticking for about 1000 miles. It happens only when i'm accelerating from low RPM, between 1000-3000 RPM and when the engine is hot. I can't hear it when i'm in front of the engine, bonnet open.
My car has 35000 miles, using 5w30 oil
Does it sound like mine?
turn the treble up

http://perso.wanadoo.fr/frunkp/cougar/ticking.mp3