Originally Posted by brian2sun

Those are common issues with any 2.5-3” lift. Both my stock CV boots leaked grease and eventually busted the boots after I put my first lift on (close to 15 years ago now). But that’s just what happens to CVs when you change their angles after sitting at stock height for so long (especially the original CVs). I’ve broken a handful of CV axels on the trails over the years, and I’ve never had a new CV leak. They get used to the steeper angles right off the bat, unlike stock CVs.

I have had to replace a couple u-joints over the years too, but that’s to be expected with a 200K mi. truck. The lift probably didn’t help things, but like the CVs, I never had that issue again once I put in the new u-jpoints. And like Dom8706 said, a diff drop will help the stress on your CVs and definitely an alignment is necessary after a lift.