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      01-05-2012, 05:55 PM   #9
Z K
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Drives: E90 M3
Join Date: Jul 2011
Location: San Francisco

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You can invest in a water filtration system to soften the water and remove minerals.

http://www.autogeek.net/defisy.html

I'm lucky I live in a location that has soft water and has great drinkable water from the faucet.
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