Hi guys. I have a new 4520 with 6 hours on it. I pulled it out of my garage this weekend and there is a 4" diameter pool of oil on the floor. I am not sure if it is hydraulic or engine. Engine dipstick reads fine but hydraulic expansion tank is empty. I am gathering it is hydraulic oil. The dealer did not answer my call or texts yet, but I will let you know what they say. Any of you all have an experience like this or any thoughts?