Good idea. On rare occasions I've seen troughs with holes rusted in them from moisture getting into the pan on an engine that hasn't been run in a long time. That rod will be starved for oil because the trough empties itself at idle. Even if that's not the case, a good cleanup of the pan can't hurt.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!