One other thing:  the German or VW grease intended for CV use is
SUPERIOR to anything else.  The moly and lead contents are critical.
Don't use anything else.  In fact, if you buy a good boot kit, it will
contain a pack of the good grease and it won't even be an issue.  Pep
Boys or others will have a grease pack in there that is full of inferior
grease.  Consider this when you're price comparing on the boot kits.
Get a German kit and do it right.  Nobody wants this service interval to
be short!

Damian
(Who has rebuilt way to many VW cvs/half shafts!)