Hello, About 5 years ago, my neighbor gave me his old Massey Ferguson MF-7 ,(he was entering a nursing home) , he bought this new back in 68. I changed the oil, put in a new spark plug ,drained and replaced the gas and it fired right up. This little tractor is almost as old as I am and I use it weekly to do my yard work. I love this little tractor but I'm having trouble finding maintenance information on the internet. I'd like to change the transaxle oil but can't find out what to put back in. It's not a hydrostatic, just a a standard 3 speed plus reverse. Any ideas?