I thought the x roll system is a set of bearings in a track. I might be wrong but I would imagine the inside of the bearings is where you are going to be encountering friction and the tracks is rolling resistance which by virtue of a wheel on a track system is negligible. In this system, having an oil or other deformable substance would actually increase resistance to movement. So I would venture oiling the track will have no impact on reducing rolling resistance but it might smooth out particles that would create obstacles for a smooth rolling of the bearings in the track. If your bearings are seized, then oil on the track would have a dramatic effect as the friction would then be sliding friction.?
So like John said- keep it clean and let the bearings do the work.?
Michael Tagge
Built Custom Carpentry?
