qupada

In ours, the coolant is referred to as “PG25” (distilled water with 25% propylene glycol, plus corrosion inhibitors and other additives). It’s widely available, and pre-mixed so it just gets poured straight in.

Your problem is going to be quantity. it might be cheaper per unit, but buying less than a 200 litre drum (if not a 1000 litre IBC) will prove to be a challenge.

I’d suggest a rethink, honestly.

This was about the only non-tabloid source I found, though they’re just quoting the other article.

https://onemileatatime.com/news/british-airways-crew-milan-sex-dungeon-motel/