Hi. I noticed a small fluid resevoir inside the hood on my 6945. It is the same pot as the brake fluid resevoir, just below the side screen on the right hand side up by the front axle, bolted to the inside of the hood. It had a 2 ft hose attached to it that was just hanging free. What was this for? I ruled out brake fluid, coolant, hyd oil, engine oil, and power steering fluid. Any ideas?