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Some time ago I replaced the rubber bushings with polyurethane bushings. They didn't need to be replaced but I was looking for something to fix. I know, don't fix it if it ain't broke. The problem is that the squeak like an old jalopy  once they warm up. Without removing them I've tried penetrating oil but that hasn't helped a great deal. Have you had a similar problem? How did you fix it?

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All,

           Over the last thirty years I can recall these fixes for squeaking polyurethane bushings:

1)  Zerk fittings--- periodically apply grease, the most common fix and seems to work well

2)  Application of anti-seize at the time of installation---I have heard of this once or twice, but I do not know of anyone who has actually done it nor how effective it is.

3)  Graphite impregnated polyurethane bushings---available for years.  I don't know how effective they are, but given the lack of negative reviews, they seem to be a good option

4)  Special polyurethane bushing lube---several years ago a fellow Pantera owner installed the poly bushings and was also sold a packet or two (condiment-sized) of allegedly special purpose polyurethane bushing lube.  It seems to work as I have heard no comments from the owner nor squeaks from the Pantera. 

            I am curious if anyone has any experience with the two uncommon options of using anti-seize or the secret polyurethane lube?

                Warmest regards, Chuck Engles

@davidnunn posted:

Pantera Performance sells bushings made from graphite impregnated polyurethane. Apparently, they do not squeak but they are harder than regular polyurethane bushings.

Dennis' bushings also have a hexagonal sleeve core if my memory serves, which I think also helps prevent them rotating on the inner sleeve. They are on my GT5 and I've driven it for 14 years and cannot recall ever greasing them.

That looks like a good solution.  Seems like just adding a zerk won't help if there isn't a good way for the grease to get to where it needs to.  Do you use special grease that won't degrade the poly?  The poly bushings I installed years ago came with a little blister of grease that I used according to the instructions. They were quiet for about a year but that was it.

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