Endless Supply

It occurs to me that I have owned my Outback for twelve and a half years. And in that time I have never, not even once, refilled the windshield washer fluid tank. Never. Is there some little known experiment where Subaru has tinkered with alchemy? Rendering my car able to simply distill this magical juice out of thin air? If so, I think they have discovered the key to perpetual motion. And for the good of mankind, they must make it available to all. Thank you, Subaru! I await your reply.