LEVY· --UNKNOWN MEMBER--
Some polyurethane brands recommend a special lubricant (that they also sell, what convenient). My question is, if regular bushings doesn't need any lubricant, why the tougher bushings needs it?Mopar markets no lubricant for the sway bar bushings. None, zilch, nada! The known procedure is to install dry. There was a time when they had a white paste (lubricant?) between the rubber and the nylon insert. That didn't work either and was only available for a short time.
The bushing is subjected to rotational and linear twisting from the sway bar. The bar is always trying to break the bushing's grip. Increased suspension travel with older worn parts may be the straw that breaks the camel's back. It's a borderline design for sure. The bushings on my Jeep are original and working well, not even a squeak, and that suspension has lots of travel to it. Just a better design, larger bushings, longer arms, the bushings are actually sitting on the front bumper.
New brackets may help. The problem is really with developing sufficient compression bond, in a neutral position (use ramps, not jacks), between the insert and the sway bar.
Using say Fluid Film, sprayed into the bushing, will quiet it down (while loosening up the suspension), for a couple months (maybe). That has worked for me, but a new bar and/or brackets is likely the best long term solution solution.
One could add a grease fitting and hole to get lubricant to the bar. Some sway bar systems have that.