![]() ![]() Refill with the 50/50 mix and you are over time increasing the concentration of glycol. How can you get back to where you want to be? Don't add more distilled water to your system after evaporation. Gimme a gallon of pure coolant and let me buy my own water! How much water? A quart or more? Toss in your 50/50, and you now have 40/60 (+/-).Įconomics? You just paid a premium for a half gallon of distilled water that would have cost you retail about $0.50. Let's say you just did a system flush, and you have water in the system. On another subject, only being able to get 50/50 premixes bothers me. As we don't know all the materials used in an automotive system, it does present a degree of corrosion risk. DI, stripped of ions, is considered to be very hungry and can react with various materials in a cooling loop. ![]() It's great for chemical mixing.įor our closed cooling systems, we ONLY use distilled water. I'll tell you that DI water can still contain a lot of dead 'creatures' and be very dirty if not done right, even though it might still 'meg up' (highly non-conductive). We 'create' deionized water in our lab by taking lightly filtered water and running it thru an ion exchange column. Perhaps there is something else you need also? And you can get free shipping if you order $75 or more. They do specifically list on their web site, meeting a Subaru spec.Īlthough there are no O'Reilly stores in your area, they will ship. Perhaps they buy their blue Asian coolant from a great source. Instead, they have other manufacturers label products as Beck/Arnley. I've recently learned that they don't make any products. Personally, I'm a little gun shy of Beck Arnley. It looks like you can also get it on Amazon for $16.25/gal, with free shipping. I see you mentioned that there are no O'Reilly in your area, so NAPA is the other source for Zerex. I believe it runs about $14/gal for premixed 50/50 at NAPA. > Products > Zerex > Antifreeze Zerex > Zerex? Asian Vehicle Antifreeze / Coolant I've read a lot of positive reviews of it. Have you considered Zerex Asian? It is made to meet the Asian specifications, and specifically lists that it meets Subaru specs. ![]()
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