fill water instead of coolant?

kau1991 · 09-24-2014, 10:01 PM

What should I do if after car services and you found out they fill water but not coolant to your car?

Or actually it wont hurt my car?

Scotty89 · 09-24-2014, 10:30 PM

You should drain it and fill with 50/50 mix of coolant and demineralised water.

100% tap water in your coolant lines will boil when the engine reaches operating temperature, causing bubbles and pressure that will not allow the coolant to flow as intended and therefore not cool your engine properly.

100% tap water can also freeze while your car is off if you live in sub-zero temperatures (unlikely in Australia).

TEAM SLO · 09-24-2014, 10:35 PM

Id check to see what kind of water.... For corrosive reasons.

09-24-2014, 10:01 PM	#1
kau1991 New Member 0 Rep 6 Posts Drives: BMW X5 Join Date: Sep 2014 Location: SYDNEY iTrader: (0)	fill water instead of coolant? What should I do if after car services and you found out they fill water but not coolant to your car? Or actually it wont hurt my car?
	Appreciate 0 Tweet Quote

09-24-2014, 10:30 PM	#2
Scotty89 Buy a 335 they said... It'll be fun they said... 120 Rep 995 Posts Drives: 2007 E92 335i Join Date: Jun 2014 Location: Melbourne, Australia iTrader: (0) Garage List 2007 BMW 335i [10.00]	You should drain it and fill with 50/50 mix of coolant and demineralised water. 100% tap water in your coolant lines will boil when the engine reaches operating temperature, causing bubbles and pressure that will not allow the coolant to flow as intended and therefore not cool your engine properly. 100% tap water can also freeze while your car is off if you live in sub-zero temperatures (unlikely in Australia).
	Appreciate 0 Quote

09-24-2014, 10:35 PM	#3
TEAM SLO Slo'est E90 around 37 Rep 300 Posts Drives: 135i gone, 2011 335IX e90 6mt Join Date: Oct 2011 Location: denver iTrader: (0)	Id check to see what kind of water.... For corrosive reasons.
	Appreciate 0 Quote