|
no dealer is going to use distilled or RO water to prepare the coolant, MB suggest to use water suitable for drinking - the tap is suitable for drinking so it gets that.
The only way to ensure that you get RO or distilled is to mix it yourself with it. Or buy a coolant from a store that is sold premix. The brand owners of the coolants use RO water to premix that. But to be honest I dont like to be ripped off by buying 16 dollar/gallon water.
__________________
2012 BMW X5 (Beef + Granite suspension model)
1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)
|