Sorry, I still don't see it. Didn't you have hose clamps?
I received the data from Mike, but it doesn't explain my original question: what exactly prevents the glycol-water solution to loose its pH level, as Brian indicated in his article on this site, which is an indication that it's time to change it, which ought to be in ~6 months?
(For those interested, the data is available in the WBTA forums.)
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