My manual says 4 quarts of fluild in my tranny on my 140 and 5 quarts if right angle PTO is on there. My question is this. I want to flush and change the fluids in the gear box and side angle PTO. The side angle PTO has a drain and filler as the tranny box does. So does this mean that 4 quarts go in the tranny and the fifth quart goes direcly into the right angle PTO, or does all 5 go into the tranny box and then leaks over into the PTO? And, if I ever wanted to, does this mean I can just change the fluid in my right angle PTO and not in the tranny if I feel like it by just draining the PTO and not the gear box? If I did that how much fluid would the right angle PTO alone take? I am confused about this. Thanks.