Hello, As my name says, I'm a rookie here with tractors. I have a 1959 MF65 with an Allied loader (ref # 2572A not sure if that's the model #). I'm having the joystick control valve rebuilt and will need to drain and change the hydraulic fluid. Being my first time dealing with a tractor and/or hydraulics I'm not too sure how to drain the system. I've been unable to find any info on this loader. Is the ref# that I mentioned the actual model #? I got that ref# off a sticker on the side of the loader. I'd like to find some info on how to properly change the fluid as well as the type and capacity of fluid needed. Any help would be greatly appreciated. I've learned the hard way not to assume and it's better (and cheaper) to just ask questions before you attack something new. Thankyou