yellow gunk in oil filler cap :S

[Ryanj]

My car hasn't moved since december and I just went out to start it up and tidy it up a bit, I looked in the oil filler cap and its full of a thick yellow gunk, does anyone know what this is and why its there?Its a 1.2 16v,Cheers

[Greg.w]

It'll be emulsified oil. Basically oil and water mixing. Common on the 1.2 clios that don't do too many long runs. Give it a good run and see if it clears. If not check the coolant tank for brown discolouring. This would indicate the head gasket has failed

[Daniel]

99.9% of 1.2 clio's have this.

Its because the oil filler neck is so long that condensation builds up.

Clean it all off, check the oil and water levels, go for a long drive (motorway/dual carriageways) and check. I'm willing to be it will be fine.

[-J-]

My old man has this issue in his 1.2.

As above its simply due to short runs, just scrape the crap off the oil filler top

[Dan@519Automotive]

standard factory fit. It's not even down to short runs, they just have a really crap breather system and condensation gets trapped