I haven't checked it lately. I was just responding to the posts.If the coolant level in your 11/16 post is much lower than it was as reported in your first post that likely would indicate a problem. We had a new Subaru in which the coolant level would lower more than it should have, several tests by a rather incompetent dealer didn't identify the problem, but I finally discovered that there was a small leak at a joint in the radiator which apparently leaked only when the engine was at normal operating temperature.
or...Assuming no leaks, which I believe is the case here, the dealer will just add some water. You can do that yourself with some distilled water. It will only take a cup or two to bring it to the proper level. Keep an eye on it from that point on.