Was in a shop recently and noticed that the machine oilers were filled with a bight blue way oil. The oil was almost neon cobalt blue. Explanations was that they have gone to a color coded oil system to help prevent the wrong oil in the wrong hole epidemic (machine tool Ebola).
Apparently, way oil has found it's way no spindles, hydraulic oil into way lubricators, etc.
Anybody know here this stuff comes from? May not work any better than anything else but it looks cool and you could see the blue film on the surfaces.