On my recumbent I use lined housings which I lube with Super Lube, a thin PTFE based lubricant. I also use Jagwire "slick" cables which are drawn through a die to round out the cable. I do notice a difference; easy, smooth, precise shifting. However, it is a small difference, occurring on a bike with very long cable housing runs. On a DF bike, with short housing runs, the difference may not be so apparent. bk
Last edited by bkaapcke; 05-08-11 at 12:47 PM.