Oil or Gas on top of intake???

Weird is I don't see any drips or ruins from intake bolt to puddle. Intake bolt is tight. I guess drops of oil can for at top of bolt when driving and splash out forming a puddle. I will inspect PCV. Correct me if I am wrong but good sign of a working PCV is it "rattles" when shaken?


Just because it rattles doesn’t mean it’s the correct PCV valve. In fact, I can say with 98% accuracy that your PCV valve is not correct.