You will need a 3/8 torque wrench, two washers 18 and 20. Brake rod 3/8 and 2 liters. First loosen the fill screws, then loosen the drain screw, clean it with a magnet as you will almost certainly have a small gray metal streak on the magnet. Then reinstall the drain plug and torque to 35 lbf. Fill differential with new fluid. You will find that once you reach the maxmi6 e-liquid amount, e-liquid will start dripping from the filling hole when you stop adding e-liquid. I only needed 1.3 liters, then put in a filler plug with new snap washers and tightened to 35 ftlb. They have made. To fill the differential I used a small clear flexible plastic hose attached to a quarter bottle. Reven has it too. look it up Much luck