Rep Power: 0

Just installed 19mm RSX sway bar, with 19mm bushings and new holders. The handling improvment is great, the car is much more eager to take corners now, but..... it keeps squeakin and creakin...... Just driving in a straight line it creaks, I drove a few times over a speed bump, equal bump on both rear wheels, it creaked.... so I think its just the bar rotating in the bushings and nothing to do with the bar twisting or the end-links. I used some Valvoline sythetic grease, but is it possible that I used too much or not enough or the wrong kind? I didn't notice grease on the stock bushings.

 
Rep Power: 412

You sure it is installed correctly? I installed mine upside down and it was hitting my control arms. Mine doesn't creak and I didn't use grease.

 
Rep Power: 318

sounds like it's upside down. make sure it looks like this:

 
Rep Power: 0

It is not upside down. I am going to take it off, and wipe off all the grease and see what happens.