There is a forum here just for grey market and older Yanmar tractors. To save you time here is a link to a recent post that addresses your question: fluid for a 165D transmissionI am changing the transmission/hydraulic fluid on my Yanmar 1500 tractor. I am a new tractor owner and just want to make sure I have the right fluid-see pic.
View attachment 792807
The above needs the premium oil. I usually look for the JD J20C speck on the container for mine with the above upgrades.Does it have wet brakes, clutches or a hydrostatic drive? If so I wouldn't use that.