I have an L120 that has trans problems. I know most of these 100 series did. Mine has almost 400 hrs on it and gets really slow when it gets hot and pretty much won't move until I let it cool down. I know the only real fix for this is to get a new k46 or swap in a K66 but I don't have the cash right now so I would like to try putting fresh fluid in. Does anyone know what kind of hydraulic fluid these trans take? Do I have to use the John deere trans fluid? I have a pump and got most of the fluid out already. Thanks for any help.