I have been using a white lithium grease in a spray can on the rollers you kind of have to just spray down toward the center of the roller on both sides and then rotate the roller to try to get some of the lubricant to penetrate inside. – if the roller seems stiff ( on the single rollers) you can remove the roller and really clean and lubricate, but on the double rollers, little bit trickier, if you have to remove those ones you need to remove the side of the stairlift frame. Normally these rollers are good for a long time, but with the dog hair mentioned it might be good to do your best in this area.
I use silicone spray on the seat post. that seems to work well.
Larry
