Quote Originally Posted by kvom View Post
Given that the lines are empty every morning the oil must be going somewhere. No?
That doesn't mean it's going where it's needed. The regulating valves have check valves in them. So, without pressure, and a fair amount of pressure at that, the oil is NOT going to the ways and ballscrews. When I took mine apart earlier this year, I found several of the valves were stuck shut, and could find no way to get them to open, even with 125 PSI air.

Regards,
Ray L.