I didn't see all the replies until now. Thanks all for the comments, esp. cyccommute
#31 for answering my question.
In the past (and currently) I have only used
Finish Line Cross Country Chain oil and
Pedalite Green Oil. Are these considered as low, medium or high viscosity? I just need some idea of how other oils are like, which I've never used, and how thin are considered thin, how thick are considered thick. My impression seems to be the former had lower viscosity than the latter, though not sure.