Ballscrew not served by oiler: how to lube ???

[Frogblender]

After much checking of the plumbing, it seems the Z ballscrew of my nm135 is not serviced by an oiler line.

Odd, because all 6 millways and the X and Y ballscrews all have oil lines.

Anyhoo... I guess I never noticed the Z ballscrew non-oiling because often I manually oil in liberal quantities. But now that the machine is in its full enclosure, it is difficult to access the Z ballscrew.

So.... what kind of lube should I use on the Z ballscrew? Grease? Oil? Ideally it would be a lube that can last, say, 50 hours of operation before needing re-lube.

[Al_The_Man]

Usually something like Vactra2, Waylube.
Al.

[webgeek]

I like Vactra a lot - it's just tacky enough to stick while not so sticky as to glue on swarf. Pretty nice all around.