I have a new 2014 Winnebago Vista 35B. The slides were making very loud squeaking noises (Friction squeaking) as I drove. I called Winnebago and they said that "CRC Super Lube with Teflon - The Green Can" is the ONLY lube to use on the Schwintek assemblies. I searched for it but it is only available online or at industrial supply houses.
I wrote to Winnebago and recommended that they lube their slides as part of the manufacturing process and include a supply of this unique lube with their coaches - just like the touch-up paints. I also asked them to send me a supply of it since it is unique and not readily available.
Hope this helps.