It's driving me nuts!
It squeaks when turning, the most when wheels are straight and turn to the right. Returning to middle is not as bad, and turning to left is also not as bad.
I took a video so you can hear the sound. YouTube Link
After you hear it (few seconds), skip the rest of the video.
Tie rod end? Drag link?
Here is a pic of the lower ball joint and how mucky it is.