I just restored my Unisaw table which had been sitting outside for ten years. I used my Dual Action Sander with 120 grit, then my vibratory sander with 150. It came out beautifully and you can still see the original ground, swirl finish on the cast iron surface. after that, I wiped it down with Lacquer thinner until I no longer saw dirt and discoloration on my rag. then, in order to keep the surface smooth and wood sliding well with no residual residue, I used a silicone spray and wiped it down.
Am I asking for trouble with a silicone based product?