I have a cub cadet 7272 with a 417 loader. One of the cylinders on the loader is leaking so I have taken both off to be repaired by a local machine shop who was able to get the seals. When they come back and I install then how should I go about topping up the fluid. I do not know what the last owner used in the tractor so not sure what I should be using. What type of hydraulic fluid does the loader /tracker take ? How much fluid does the tractor take Will I need to drain the old hydraulic fluid and put in fresh eg like a car oil change Thank you for your help from a very novice tractor owner.