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Old 05-03-2016, 01:39 PM   #27
humfrz
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Quote:
Originally Posted by stevesnj View Post
Deionized water is a purer version of distilled water with lower Ph levels and less minerals than distilled water. But i know I saw somewhere where Subaru says to use Deionized water in their blue 50/50 coolant.

And yes a bad cap would allow the water in the coolant to vaporize but there would also bee higher coolant temps because of a pressure reduction.
It's my understanding that distilled water, cannot contain any amount of inorganic minerals. Why? Because the minerals that contaminate water have a higher boiling point that water.

Pick it up @Ultramaroon ......


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