could have been a kind of additive maybe? but then it won’t be a lot of it. borax forms a gel or at least high viscosity solution when mixed with glycols so both can’t be used at the same time as a coolant
Dye might be fluorescein, it fluoresces under UV (duh) could be useful in checking what’s this thing
mildly concentrated sodium hydroxide solutions would corrode the living fuck out of aluminum pretty quickly (https://www.calpaclab.com/aluminum-chemical-compatibility-chart/), especially when hot and circulating, so no
could have been a kind of additive maybe? but then it won’t be a lot of it. borax forms a gel or at least high viscosity solution when mixed with glycols so both can’t be used at the same time as a coolant
Dye might be fluorescein, it fluoresces under UV (duh) could be useful in checking what’s this thing
It kind of sounds like they told some junior exec to come up with a quick excuse because whatever they were actually doing was a lot worse.
i have no idea what they were cooking but it’s not coolant, unless temperature there never drops below 0C
I think @ChicoSuave above figured it out. It was used to flush the coolant.