the motor should take 4 quarts of 10w30 motor oil just like you put on your pickup. use detergent oil, no matter what any one tells you otheriwse. the transmission, hydraulics and pto are all 1 cavity. fill is by your left foot. 3 drains on the bottom, 1 each cavity = 1/2 inch pipe plug. total is about 8 quarts of trans hydraulic oil. you can get a 2.5 gallon container at Wal Mart of 20wt hy-trans for about $10. The lst area is the final drive pans at the bottom of each drive case (positioned in the rear wheel rims). thre are about 12 small bolts holding each cover on. remove, clean out the crud and reinsatall. make your own gasket and use RTV. put 2 quarts of 90wt gear lube in each thru the pipe plug hole.