Avoid peeking in the radiator more than necessary it lets air in that is absorbed in the solution.
Where to buy deionized water for coolant.
The deionized water will always be looking to satisfy its demand for ions hench the term hungry water.
There is no way i would put deionized water into my automotive coolant especially considering the cost and risk.
Hoping the corrosion inhibitors stop that process is a risk.
De ionied and distilled water were called aggressive water by the water doctors at where i worked.
Why you should never use distilled water in your cooling system.
Aerated water or coolant is not good either it just gobbles up the corrosion inhibitor.
Apr 26 2018 by.
Continue reading below we want to use distilled water and not ordinary tap water that has minerals to prevent lime scales from forming inside the cooling system.
With distilled water costing a dollar or less why invite trouble.
We get this question all the time when talking to customers on our tech line.
Whether you know it as coolant or antifreeze this product is really just an additive that when mixed with water serves to broaden the range at which that water will freeze and boil.
Look at the corrosion test results above.
Pure coolant has none of these properties but it becomes a magical elixir for your engine s cooling system when it is mixed with water at a 50 50 ratio.
Thus the best mix for a climate like ours is a 10 90 or 20 80 mix of antifreeze coolant and distilled water.