[History]

I've read on here that the level will settle in to a spot that fits the car. Most say that you probably won't see the coolant as it will be below the baffle of the radiator. Yours may not have this baffle. In simple terms the radiator pukes out what it doesn't want until it stops puking.

If you are saying that yours keeps dropping over and over without the addition of any added coolant then it has to be going somewhere. Bad head gasket or crack in block or head??