Yea yea, I know the whole mantra about using only BMW blue coolant. But I'm gonna be fixing my radiator this week, and decided to try Zerex G-05. I suggest reading up on this stuff before you die hards start jumping all over my ass about using the non-blue stuff
Anyhoo, seems there has been a big run of mineral free water here in my town, and we're bone dry, so to speak. Every store I've tried is out of the stuff. What are your thoughts on using plain old distilled water? Or should I keep searching high and low for the mineral free??