It it always leaks down to the sensor, and doesn't go further, I'd be changing the tank.The coolant reservoir is not about full tho is the thing. It’s throwing the coolant low message on my dash because it’s halfway between empty and the minimum line. I misspoke a little in my original post.I’ve been told by a few shops that if it’s not budging I shouldn’t worry about it. So that’s a common answer so far