Silicone = Bad in the shop imo.
If by chance it gets on any woods you may have problems with finishing.
It may show up right away or down the road with adhesion problems.
I fully understand that and am a very long time woodworker and finisher my self. As to its use on a lathe bed, just spray a little splotch on a wadded up piece of paper towel like I do and you are fine. No overspray, rub the bed a few timed and wipe off. Easy peezzy, your needs or usage may vary though. I worked and retired from the corporation that makes pledge and am very well versed in the effects of silicones as to finishing.
Was just a suggestion, and also one that was recommended by the lathe manufacture that I have, and if I remember right the one that Goldcrown has, so I thought it was appropriate seeing as how that brand can have a galling issue if used wrong.