Hi Kenny,
Glad we could help. It's not a bad idea to do both but if your boots aren't ripped the joint inside should be fine. It's when the boots rip that the issues arise. The grease spins out and dirt gets in then that the beginning of the troubles.
2CarPros is here to help, be sure to tell a friend and post us on your social network.
Let us know if you need anything else.
Tom
Wednesday, September 9th, 2020 AT 9:36 PM