After having new KYB struts installed on my 130,000 mile 2002 LS430, I have a slight squeak coming from right rear only when turning right. Spraying WD40 on the bushings quietens it down for a while. I haven’t tried oil or grease yet.
Yesterday I loaded about 300lbs of garden supplies in the trunk and the squeak stopped. Does this indicate which bushing might be the culprit? I hate to start spraying lube on all of the bushings.

 

Or change stabilizer bar bushings and links?