Hi Everyone first post here. I am in the process of upgrading to the 80mm spindle and I am wondering what brand name of chiller coolant you are running?
Thanks
Isaac
Prestone-- it’s what they had at the Borg. I don’t think it matters as long as it has antibacterial properties and doesn’t freeze if that’s an issue in your shop. Ethylene glycol above ~20% kills most microbes (I used it at 50%, as you would in a car. While I heat my shop a prolonged freeze is a possibility). I plan to watch the lines and check it every year or two.
I got the cheapest 50/50 mix Autozone had to offer. 
I went cheap too. I live in a “Drinking community with a boating problem.” :D, so I got the pink RV/Boat/Pool winterizing anti-freeze. It’s been working great for 2 yrs & still nice & clean.
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From experience. Flush out that rv antifreeze every year. I had two systems develop clogs in chiller lines with it. Never could get the low flow alarms to work right after.
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I’ve been told it will coagulate if mixed with water. I run it straight and everything is staying clean so far. 
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