Originally Posted by maximusvt
If you search bikeforums on "motor oil" there are a lot of threads discussing its use as a chain lube, and in those threads nobody reacts to it with the horror that some of you guys are right now.
'Tis true... but OTOH, proponents usually mix something with the motor oil to thin it down, and they don't try to present it as being 'clean.' I find it slightly amusing that the OP seemed surprised that motor oil was oily. Maybe thinning it down with WD-40 would do the trick!