My first start is always with plain old water...……..
Yes.. this is a great tip.
I did this with my 22R head job. I found all kinds of "particles" (pieces of gasket material, RTV, other stuff) when I drained it.
I did NOT use just water on my recent rebuild, and ended up with slimy, sticky ethylene glycol running up my arm as I had to fix a leak at the little hoses under the IAC valve.