The front of my truck is squeaking. I recently replaced the sway bar links, all of them. (the two front ones and the ones on each end of the sway bar. 4X4 Mitsubishi Mighty Max) I also replaced the shocks, all four of them. Furthermore, I replaced the front right idler arm. I tried fixing the problem by adding grease to all the bushings with zerk fittings on them to try and fix the problem, but no luck. What could be the problem?

Here is a video to show you what the squeaking sounds like:
https://vid.me/6woW