Just get the one man bleeder cup, I think mine is Lisle tool brand available at a lot of auto stores. It's simple and really works, I have used mine dozens of times. Gravity doesnt always work with the small diameter of the line you can get an airlock. Never used a suction pump but dont waist your money.Trust me on this one, I have owned almost 100 cars so far and the one man bleeder cups are easy to use really do work.