I never used that stuff, but I replaced my fluid with a pump. You can get a pump and attach a hose to it, which you then put into the reservoir and suck out the fluid. I used a pump designed for this kind of maintenance. I did the complete fluid change in my reservoir like 2-3 times and it completely changed out the fluid. I did this recently, and it seems like all of the fluid was changed out. After you replace the fluid each time, you'll have to drive it around for a bit (try to make a decent amount of tight turns) to get all the fluid pumped through the system so that you don't just change out what you just put in.