Ok, so I had a heck of a bad leak when I first got this tractor (B6000). Changed all of the fluids and keep a very close check on the oil and hydraulic fluid. I have noticed the past few times that I have used it and parked it on the driveway to wash it off.... No oil on the ground! The oil is right on the mark where it should be according to the dipstick so I know it hasn't all ran out and is dry. What the heck??????