Quote: Insightdriver wrote: The oil only needs to be in the roller area, not on the outsides and surfaces of the plates.
I agree in principle. On a motorcycle chain, I believe one should oil the rollers between the plates. The oil will wick into the area between that roller and the pin. Most modern motorcycle chains have o-ring seals and that hypothesis probably doesn't even really matter.
But that same principal should apply to bicycle chains since there is no o-ring between the roller and pin. The oil will wick and minimize wear. However, a bicycle chain must also shift up and down the cogset (motorcycle don't) and therefore should have some lubricant on the outer plates as well to facilitate shifting on the cogs.
Quote: the oil is hygroscopic, keeping moisture out.