I've pulled the plugs on an 8n and let the emulsified hydraulic fluid drain. Should I just let it set for a day or so with the plugs out, or should I fill it with something, run it, and drain again before putting the new fluid in? If fill with something, what should that something be?
I was going to drain it, pull the side cover, flush as best I could with non chlorinated brake cleaner, and refill it. However while watching the crud come out I started having doubts about not running with a flush fluid first.