There will always be an amount of leakage from the tank after the saw has been left for a period of time, the oiling system is a constant loss type, onto the bar and gone, if the saw is only cutting small logs, the oiler is still delivering the same amount of oil as it would with a large log, the saw also still oils at idle, so never leave the saw idling on the floor when moving other logs. There was a later pick up/delivery pipe, this was more to keep the oil flowing, the main thing to worry about is that the chain is getting oil and not running dry.
Husqvarna man
October 2009