Ed Huntress wrote:

Carry it to the *sink*?? What do you do with it when you get it to the sink?

Dump the crap out, wash it out with hot water, then refill, add
concentrate and put back on the mill. There was a period from 2002-2006
or so when I rarely used the mill, just everything was real slow, and I
used oil and no coolant. The tank dried out and had all sorts of gunk
in it. When I started using coolant again, I had to scrub the sump out.

Jon