here is much easier , has a 8'8 liter capacity also. You can pump fluid with it as well as draw fluid out.... They have a handle like a bicycle pump, you give it about 20 strokes and then just for it to finish sucking the fluid out.
The side of the reservoir is marked so you know how much you've taken out. Mityvac makes a number of differnet ones, one thats powered by shop air if you don't want to hand pump. A cheaper one that only evacuates doesn't allow you to pump fluid in.
The only hassle is cleaning them, so if your going to use one to pump fluid in ,its better to have 2 one for sucking it out and one for putting it in. They also have brake bleeder adapter kits for it, to bleed your brakes with.
http://www.thetoolwarehouse.net/shop/MIT-MV7201.html