[Westphal]

I know folks that have gone to the trouble of modifying normal poly bushing setups to provide "grease runs" in the bushings and grease bungs in the bushing brackets to allow lubrication to be routinely pushed into the bushing interfaces with a grease gun.

I installed poly sway bar bushings on my '87 Camaro, then had to take them off to add more lubricant every year or so. Once they (probably Energy Suspension) came out with bushings/shells with the grease ports and slots, I replaced them and hit them up once a year with the grease gun along with the rest of the grease fittings (9 for the steering components, plus the aftermarket suspension pieces in the rear).

 

[Westphal]

I replaced the sway bar bushings on my '87 Camaro years ago with Energy Suspension poly bushings, and they came with a zerk fitting that went through the bushing IIRC. Since the Camaro had a ton of zerks in the front suspension and steering (old-fashioned recirculating ball type), I'd hit them with some grease about once or twice a year. Never heard a peep out of them. Neither our '09 GC or our current '08 T&C makes this noise either.