I bought an new Hustler Super Z 66" with eh 30hp Kohler from my local dealer (i'm in Gainesville, Florida) I got it for $7,699.99!!!!! Its a 2009 model too. This is less than I paid for both of my 60" Super Zs. Also, I know Hustler has changed hydro oils in their Zs. How do I know if mine has the new or old oil and should I change it now to the new oil? My dealer said to wait 50hrs, change the hydro oil and filter to 20W50 full synthetic. He said this is above that the factory calls for but since we are in Florida it would be a really good thing to do. What do you think?