swap bar noise

[flyinlow]

I installed a rear swaybar on my 73. Works well . An addco bar, did not have one origonally.

The only problem is it sqeaks going over bumps. The black bushings on the frame brakets are making the noise. Tried silicon grease ,tried chassis grease . Stops for a short period the sqeaks again. Makes my car sound like its 40 years old.

Any tips?

[Just 6T9 CHGR]

My bar came with special urethane bushing grease....really sticky, gummy snot like stuff that doesnt wear off....maybe a call to Addco to get some?