Was checking under hood earlier and noticed that I had lost my coolant overflow cap and the old yellow label around the neck of bottle. I know it was on a couple days ago (pic below for reference). Granted the cap was old and brittle and was also broken apart from the yellow plastic ring that holds it on the bottle, but really not sure why or how it decided to come off (and take the yellow label thing with it. Any thoughts from the group? Anyone had this happen. It’s not that the part is expensive just curious as to why.