awesome thank you for the the information! I will service it, along with the fuel filter and spark plugs soon.I think there was a serial number break where they got oil filters. My grandparents bought an older 4x2 second hand and put thousands of hours on it with no oil filter. I wouldn’t worry too much. The big thing on these is keeping the differential fluid changed and don’t cheap out on it. They have wet brakes which requires the differential to be removed and split to replace the discs. My grandparents got changed with yellow bucket 303 and the brakes chattered, grabbed and all around sucked. Took a few changed with Hygard to get things back to normal.
I did find that there is an add on kit that John Deer also sells for adding an oil filter, but I need to confirm compatibility. https://www.greentractortalk.com/threads/2008-gator-cx-add-on-oil-filter-assembly.203253/