Change to synthetic fluid if yours uses Dexron. Not sure if there is a synthetic replacement of CHF, but probably. You have to drain the whole lot from the low points if not pump it out. Check the Bently manual or search online for the procedure- just don't try to do a half job. Check belt tension is as per the book first as that is the most likely culprit. The filter is inside the resovoir (at the centre) but its easy to buy a new ZF resovior with it already inside- USD$25 or so. But it won't be that unless someone delberately put **** in your system or something is broken.Originally Posted by werminghausen
If you just bought the car the Prev Owner may have tightened the steering box grub screw too much to reduce play... if so, change it before the box dies nad you are up for serious $$$