One data point for ya.

I got 10 gal. kool mist at an auction. So, I use it in my lathe mister, my
CNC machine pressure coolant sprayer (like a Hench Fog buster), in my hand
squirt bottles, and I've even used it on the bandsaw. Works good enough for
me.

I don't use it in the surface grinder. I use soluble oil there. This is what
I normally use on the bandsaw.

Karl