It was raining yesterday and I noticed the typical rainbow colouring of some of the water around my car. Couldn't tell there and then if it was a car body fluid leak or just the water going trough the engine and getting contaminated. Decided to move it, as I started it and moved it, when I got back to parking spot, rainbow coloured water was left behind, under the exhaust, under the exact middle of the car, and under the engine. Some 12 hours passed, the rain stopped, I went to check it, there was still rainbow colouring, had a drive around the neighbourhood, eventually a shiny trail I could see in my mirror disappeared (hence if it was accumulated water somewhere, it went away) I popped the hood and this is what's bothering me (google photos album)
The board computer claims "OIL OK" on engine start, and so does visual inspection of the dip stick (plenty of oil . I have a short outing later, and this will give me the perfect opportunity to monitor the oil further, but any advice is welcome.
Car: C4 petrol 2005