Welcome to the forum. If you posted this question in the CHAINSAW section of this forum, you would probably get a ton of help in short order. I for one don't know much about that saw or how it oils.
That thing needs every bit of oil it is getting. I have one and don't worry about it. It really doesn't consume that much more oil than it is supposed to. Let it use it, you'll need it when you bury the bar in a log.