Thread: How to Flush/Change Power Steering Fluid on the 3800/3.8L Engine

Originally Posted by michael redmon

Will sucking out the reservoir a few times over a few days get all the old fluid out? I ask because that's what I do.

No, but that is basically what the shop power flush machine does. It will, over time get a lot of the old crap out by basically diluting the old and putting the lubricity back into the system. I have done this for many years and it works just fine. I do it every oil change. I suck out 2 quarts worth of fluid. I suck out the reservoir and refill, then turn l lock to lock about 10 times and repeat until the 2 quarts are gone.