MY 2004 MASSEY GC2300 HAS A LEAK IN THE VALVE FOR THE FEL . SOMETIME WHEN MOWING LOADER RAISES ON ITS OWN. I DONT KNOW IF IT IS PROBLEM WITH TRACTOR OR LOADER. ANYBODY ELSE HAD THIS PROBLEM. ALSO WOULD LIKE TO KNOW WHAT OIL I CAN USE IN THE HDRAULICS BESIDES MASSEYS PERMATRAN