On my 2002 SC430, I had Daizen sway bars installed around Jun '04. Several months afterwards, I noticed squeaking noise coming from the polyurethane bushing during suspension rebound mostly. Not really during cornering. Finally in Oct '05, I worked with Sewell Lexus (Dallas, TX) to have the bushing relubed to make sure they were done properly (they didn't do the initial install). Then around Feb'06 the squeak came back. I notice it more when the weather is colder or in damp conditions. Has anyone else had this issue? Thanks.
