Ok so I am begging for help. My father bought a 1978 B7100E and is driving me insane with questions because he has no manual and never owned this type of tractor. He has a FEL and a grader(?) in back. He is asking me about the location of the hydrolic fluid for replacement and I am just not sure what he needs because this in not my area of expertise by far. He also is asking if he needs to use the factory UDT or if there is an alternative. Someone plz take pity on me and tell me everything you know Pretty please!!!!