2004 John Deer Buck Utility ATV 500, 500EX and 500EXT Service Manual, Page 12Get this manual
Use the appropriate oil viscosity based on the air temperature rangesOperating outside of these recommended oil air temperature ranges may cause premature gear case failure The following John Deere gear case oil is PREFERRED: The following John Deere gear case oil is also recommended if above preferred oil is not available: Other gear case oils may be used if above recommended John Deere gear case oils are not available, provided they meet the following specification: