Can't tell you how difficult it is is to install some of these jacks. I almost gave up installing some of the bushings because the old ones were so difficult to loosen and these new ones were so difficult to install. But they work great and someone who has already installed bushings will probably have an easier time than me. . I don't have any squeaks as the grease on these bushings is very sticky, almost like glue, it doesn't rub off when it gets in my hands. Wear disposable gloves when applying lube as it won't come off with a quick towel dry like regular lube does.