In this pic you see on the right side, the yellow and red arrows pointing to an opening. When I start the car after it has sat for some time (WEEKS) that little opening you can see rad fluid bubble in it just a little and to date it has not dripped anything after the car has been running or during. If I drive it more often this winter it does not do it at all. Can I put some sealant in it to seal it up? That pump this past summer so it has not been driven much.