nukem, this has been discussed before, the grease just hides the noise, but your bushings are still not working and your handling suffers because of it. At least, that's what others have experienced using the energy ones.
Guess I'm just lucky with mine so far. If it means anything to anyone, my E bushings were not put on at my dealer. they didn't have the right kind of lift....not sure what that means. they went to another garage where they installed them
It is possible with those that are failing, that your dealers are not installing them correctly. Yes, that sounds crazy, but it's true.
Why would it work for some and not for others? My bar and bushings were replaced 22000kms, 1 yr 4 months ago. so far so good.
I still drive around paranoid as hell about it though. I'm betting that one day, it will come back. I just hope someone else owns the car by then