To get any air out possibly. The brakes are too soft. When I put in drive or reverse , the brakes make an awful noise
Alright, I guess I could see flushing the lines if you wanted to get new fluid in them, (actually a good practice about once every two years).
When you say noise when going into gear, is it a clunk? If so, that to me sounds more like U-joints than brakes.
99' WJ, 2.5" Rusty's, Bilstein 5100's, JKS TrackBar, Moog SuperTrailBoss
"With enough fabbing, time & $, it's certainly possible.
That being said, it's like boinkin' your sister...just because you can, doesn't mean you should." - Double E