It's beginning to warm up here in Manitoba, Canada. I've been talking to my local mechanic guy who thinks his uncle owned a tractor like mine years ago. His uncle isn't around anymore but his Dad is. He was supposed to get back to me on what kind of oil goes into the transmission, but I haven't heard back and assume his elderly father isn't sure about the type of oil. I have a copy of the original service manual but can't find spec's on the type of oil I need. The 3 point hitch hydraulics are contained in the transmission and are separate from the hydraulics that operate the front loader. Can anyone out there tell me what type of oil I need?