We're just installing Kitamura horizontal that has been well lubed, but I doubt ever cleaned. The coolant left green slime mixed with ickky stuff everywhere.
Typically I maintain our machines with WD40 or alchohol. Spray on WD40 and wipe it off. It removes oil stains, greasy palm prints, the oil stains from where you bang your head against the machine, etc. Alhohol works great at cutting the oil as well. Ethanol alchohol works well when sprayed on stuff you can't readilly wipe up. It cuts the oil, and crap just runs into the coolant pans. We'll give those a good cleaning before we charge it up.
My wife has been helping with the cleaning (bless her heart... she gets really dirty...) She's resorted to her steam blaster (soem tool she found on the late show. That and breeze cleaner work really well at getting the icky stuff out of the corners. I can actually see the sheet metal on most of this machine now.
Now If I can just fix up the leveling screws where the rigers mashed them with the forks and get this sucker leveled we can get to work...