I've checked various posts regarding chain lube, but still unsure as to what to use. Many seem to use kero or citrus degreasers. Kero is pretty good at removing all sorts of hydrocarbon sh!t off -- reason why they are used to clean dirty oil-burning car engines. But, as a former student of materials engineering, I don't think kero is the right choice because what it can do to O-ring and lube inside. Citrus degreasers...I don't know much about them. Bloody label doesn't really say what's inside other than the propellant. I hear they're good for cleaning outside of engines and shop floors. I use citrus terp to clean and repack ball bearings and remove fouled-up lube from chains on my push bike. I believe they are the best for this sort of cleaning. BUT there is a nasty catch...chain must be taken off because it has to be brushed while immersed in the terp for proper cleaning. Somewhat frustrated and confused, I went out on Monday to ask folks at autObarn if there is any way to clean chain without removing it. They recommended applying PowerPlus "Clean Brake" on a rag and using the rag to clean. Being extremely gullible when three or more salesmen say the same, I bought it without much thought. So, my question are... 1 Has anyone tried this brake cleaner spray thingo on their chain? If yes, is it any good? 2. Know any other solution to my problem (no kero; thorough cleaning w/o taking chain off)?