Originally Posted by marchyman
A friend also discovered through exhaustive experimentation that a quart of oil in the engine was better than a quart of oil in the tank bag.
Yes, engines appreciate having oil in them moreso than tangbags. I'm hesitant to come to a firm conclusion on this since I don't know all tank bags that well. But I'm pretty sure engines don't like to run dry. As far as I can tell (and I'm fairly biased) tank bags are usually okay being run dry.