[windowpane]

I think you are supposed to fill on the low pressure port, on my m and it should be the same on your concorde, unless you have the 2.7l then maybe not, its the port facing the front with another port right on top at a 90' angle. Location is front of engine by the airbox, again on the 3.5l engine but one should have an L on the cap, you should be filling this, and the other one on top is high with H on it.

You do have the refill with the gauge right, those are better than the kit w/o it so you know your doing it right.