I went to add half a quart of oil today and noticed yellow stuff under the cap and in the piece the cap screws in to. What is the deal here? never noticed this before

 

was it slimy? sometimes its from condensation under the valve covers that it burns off and sometimes gets stuck in there, it gets like a faded yellow color and is kinda slimy looks like lard or something..that might be it!

 

I see this asked about two to three times a week in here....LOL.

 

Check your PCV system. If it is cut or clogged it wont suck the nasty crankcase gases back into the motor to be burned and the gases will instead build up and stick in places such as the oil cap. I had it happen to me and it was that my PCV line was cut in half from wear. Repklaced the line and all is good again, no nasty buildup.

 

Slimy and fadded yellow, exactly what I am seeing. Could be it is winter and freezing cold outside? I know it wasnt like that in the summer when I bought it.

 

Then why do u respond when obviously I havent

 

Just wipe it out with paper towels/rag. It's from condensation usually from short trips in winter.

 

This would be the answer to every one of these posts........ Search is your best friend!

 

I sprayed some WD40 in mine and let it sit 5 minutes, then came back with an old toothbrush and shop rags and cleaned it like new.

 

ok its condensation! run the engine for a long drive or something and you will get rid of it! lol at first i thought on mine i had a blown head gasket! scared me and excited me at the same time!

 

Agreed. Check the system.

 

its nothing serious, but yea check your pcv, forgot to add that!

 

Mine did it, since changing the oil and checking it regularly it hasn't been back.

 

i saw it on mine last time i changed my oil...... this HAS to be a common problem..... my car only has 14k miles so im assuming my pcv system is fine