ALWAYS use distilled water and try to keep the air in your reservior to a minimum AND make sure your reservior is as close to air tight as possible!!!
1. Tap water, regardless of your location WILL have some bacteria still alive in it. This can form alge and fungus in your system, especially if it's using an open air reservior.
2. Tap water (as already mentioned) regardless of your location WILL contain certain amounts of minerals, which will create scale deposits over time.
3. The water you use in your system (REGARDLESS OF WHAT TYPE) will create a small amount of current and become acidic over time. This is what happens to water when cycled through metal passages. Especially metal passages that are electrically separated from each other (can you say WBs and RADs). If you think I'm lying, put in fresh distilled water, and flush your system. Then refill again and take a ph test. Then after a week, test the ph again. The water WILL be more acidic.
4. Always pay attention to your aluminum components. I have yet to use a wetter (lazy) and have seen a steady buildup of aluminum oxide in my reservior over the 4 years I have run the system. It's about time to change out my trans cooler I expect. 8-D
Everyone chime in and rip these apart if you feel I am incorrect.
*** FLAME ON! ***
