Thanks Raptor. I got the Hustler by default and it has been a great mower. Traded a 935 Diesel and 318 John Deere's for it. It has 775 hours on it. As I bought the Hyd. Filter from a dealer in Indy, he could not come up with a fill level or amount of oil needed on the change. It was closing time and I think he was in clerical work / sales, not hands on tool work. I have become sensitive to the sound of metal against metal. I mopped the bottom of the oil Reservoir with a white cloth to check for metal, post draining. Found very little. My Son and I mow about 4-5 acres of our home and property which has several trees. My Son mows at top speed and the mower is really turned at full speed also. I backed the mower in a garage and noticed a few oil drops, which I traced to the Oil Reservoir. The mower had been service at a dealer so I had no question as to the correct amount being put in the Reservoir? After the Filter change and new oil put in I noticed the oil looks to have air bubbles in it, does the system need bled somewhere? Again Thanks, Mike Carpenter