Originally Posted by wario
But, not to start a "oil" thread - but, a warm engine is a warm engine. I do not believe that the motor knows the difference in temps between when its hot from riding, and hot from idling.
I do believe the key is to get the motor hot - period. If its idling, then it needs to idle until the temp gauge reaches normal operating temperature. Otherwise, you will not bake/cause evaporation of the condensation out of the oil and the muffler/exhaust...
Leaving your engine to idle for the sole purpose of warming the oil is inane. Just wait to do that maintenance chore until you have an opportunity for a ride. If it's the dead of winter and you won't be riding until spring then you're better off leaving the bike alone anyway.
Best is to get back from a nice long ride, park the bike on the side-stand until the engine has cooled to the point you can hold your hand on the sump, then put it on the centerstand and drain the oil.