I had a shop do my valve cover gasket due to a leak almost a year ago and they supposedly cleaned up the mess. But I was under the engine cover to get at the sparkplugs and noticed the oil cap area seemingly leaking oil. There's a flap/gasket under the cap and I'm not sure if it's supposed to be moving about like in the video. I used degreaser to clean it up and only time will tell if this is left-over or an active leak / somewhat acceptably normal?
https://youtu.be/NGxrB6qi9so
https://youtu.be/NGxrB6qi9so