I just purchased some Prothane spring & shackle bushings,but they won't be on the road for awhile. So, I don't know how well they work or don't. Can any one tell me if they like or don't like these bushings?
I put energy suspension polyurethane shackle bushings and heavy duty shackle kit in my 71 and there was no noticble difference in ride.
But the experience I did have was the "Formula Five Prelube" stuff they gave me in little tubes was thick unspreadable stuff that acted like glue more than grease, I actually contacted them and asked if it had gone bad or if others had similar experiences, http://www.stevesnovasite.com/forums/showthread.php?t=200568
look here for a quick read about others using grey permatex anti seaze on poly bushings.