HeRoze
Addicted to ArboristSite
We use it on the rollers and the little gear track that goes along the top and everywhere there's a joint that moves. I've got the door set on the light setting so our cat won't get caught under the door when it closes. The directions say not to use anything but silicone spray on it because oil thickens up in winter.
as long as it works! (unusual advice for metal to metal, though)