I would NEVER put tap (or garden hose) water in my cooling system. Look at any of your faucets or in the water pipes... there's mineral build-up. I don't care where you live or what kind of water treatment you have... it's not distilled!

I'd only put distilled water in it.

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1984 190D 2.2 Auto 220k
2001 Jeep Cherokee Sport 70K
2004 Lexus RX-330 ??K
2005 Chrylser Crossfire LTD 6K

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