What maintenance do CV joints require?
The rubber boots protecting the CV joints should be inspected at each oil change, and replaced if any cuts, cracks, or damage is noted. A leaking boot will allow the grease to run out, resulting in very rapid failure of the CV joint. Replacement of the boot requires removal of the joint, but is well worth the effort. The joints should be periodically removed, cleaned, inspected, repacked with grease, and reinstalled. In addition, some people recommend switching the joints from left to right and vice versa on a periodic basis. This is due to the fact that wear on the joints tends to be directional, based upon the loading imposed during forward travel. By swapping the joints to even the wear their life can be extended. Since new CV joints from Porsche cost approx. $150 each and there are four CV joints this seems like a worthwhile idea.
