I costs twice as much as the graphite, and the results are basically the same. I know my former employer pretty well. When I worked there they never considered lubing the curve . We relied upon the inherit drag that curve created to help stop the train, as it is where the main station was located. No air brakes, Johnson Bar supplemented with steam jam on the locomotives only (except the Mogul, it was Johnson Bar stopping only). Used to come in flying and could stop it on a dime. Now they crawl in.