What is the film that coats the news chains for shimano, specifically the ultegra? Any help would be much appreciated.
I believe it is the same substance that coats fly paper. It may keep the friction low when new, and it probably repels water pretty well, but that shit is a fuckin’ dirt magnet.
Heavy machine oil.
matty1281,
Its cosmolene, a petroleum by product to prevent rusting between manufacture and installation.