Lately I have been using a lubricant called "Kroil". I have an aerosol can and my usual procedure is to put my bike on my stand, hold an old towel under the chain and liberally spray a section of links. The towel catches all the "stuff". I do this to the whole chain, section by section, and then hold the towel around the chain and crank. This removes quite a bit of black "gunk". I then use the Kroil again to lubricate and wipe the chain again with the towel. This seem to clean and lubricate it. I'll see how this works until my aerosol can runs out.