Thanks for the replies, guys. No, we're definitely dealing with two seperate problems. The engine has not lost a drop since it's last oil/filter change (Delo10w30) and as I indicated, I had just checked the oil before startup, yesterday AM, and then again after lunch. Dead on the full mark. After seeing the oil leaking from the engine compartment, my first thought that it was hydro oil. But, the dipstick shows it to be a little below the full mark, at least a pint, maybe a little more. It does have the Bobcat vented cap on the hydro tank, and I should correct my previous statement to say this: I have always noticed a slight leakage around the dipstick tube itself, but nothing that a shop cloth would not clean up. But, this is closer to the "Exxon Valdez" !! (lol). It's a pretty good loss. However, come to think about it, I have been working on some pretty unlevel terrain as well as doing some tight turning between the rolloff container and a bank of earth on one side. It seemed to be "hopping" more than usual yesterday so perhaps it really got the oil to sloshing in the tank. Good question - but yes, both dipstick checks were made on flat ground and after the machine had been cut off for about 20 minutes. I suppose I might refill back up to full on both and run it for an half hour or so (on level terrain) then recheck for leaks. I hope this is all it is. Does this machine have a charge filter ? Additionally, is there a service manual I can view online, for this 742 ?? Thanks for your time and attention. John