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      11-29-2019, 11:26 PM   #22
GolfR17
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Drives: BMW M5
Join Date: Apr 2019
Location: California

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Distilled water OK?

Got a low coolant warning around 5000 miles. Called the parts counter at the dealership to see if could buy more. They weren't sure which one I would need though. The person I talked to thought probably the "blue" coolant. The stuff in the auxiliary reservoir looks yellow-green. Hard to see what's in the main reservoir since it's low but I think it's also yellow-green. I didn't want to risk mixing and matching or driving around with no coolant so I topped off with distilled water. It took at least 750cc to top off. I'm in an area where won't get freezing whether.

...This should be ok right... or should I head straight to the service dept and get it sorted out?
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