My water level was still same as I left it after repair. Pulled it out and dumped it since I needed to get to the turn signal in the grille to change gasket. Decided to try cleaning it better. I used Zep purple that I got from Home Depot. Sprayed in the part where the hose goes on (and everywhere else) let it sit about 5 min and used a soft brush on outside. Not sure what I used on it previously, but this stuff took more off and got a lot more out of the tube where I cant get at it. Still some yellow brown that I think is plastic color change from heat, but I believe it's as clean as it's ever gonna get.