The water lines we're using will be filled with distilled water. Remember, never put tap water inside your radiator. Tap water has a low amount of chlorine in it that will erode your radiator and cause rust to form inside of it. Distilled water is much more pure. We'll also be putting a product called Water-Wetter in the radiator. The distilled water and the Water-Wetter will allow us to run cooler and that means we can now run more tape on the nose of the car.