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Discussion Starter #1
So i'm doing work on my car and have the heads off along with everything else. I'm wondering if anyone has just put the distilled water and water wetter in replace of the GM dex-cool. I have done this on some of my past cars just wondering about this car.
 

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That won't be an issue as long as you don't leave it or use it in freezing temps.
 

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You can but we usually use at least 30% dexcool just to keep away from issues if the car is parked outside and temps drop. Haven't seen much difference in coolant temps between straight water and 30% dex.
 
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