After I took my Z home I realized that the windshield wiper tank was busted and had been cracked almost perfectly around the bottom. I bought a new one and removed the tire and the side fender well to replace it as per the instructions given in the "FSM". I found that it's impossible to replace the tank without removing the front bumper unless your hands are super small and thin as paper because the 2 main mounting bracket screws face away from the bumper and there's NO way to reach them.
Unless you're prepared to remove the front bumper don't even try doing this because it's a waste of time, thanks for letting me rant.