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Re: Distilled water for coolant? Necessary or no?
Posted to Technical Theory Forum on 2/2/2018

I'm retired and old school. I was also anal. For years, I bought coolant in 55 gal drums, mixed it 50/50 with de-ionized water I bought from the local soft water shop. De-ionized....I believe, is cleaner? than distilled. A LOT cheaper than the factory pre-mix,... Login to read more.