I used heim joints with grease fittings on the rear four bars for a long time, and then replaced them with urethane bushings when I re-engineered that to use a Mustang II triangulated link arrangement. A few years down the road now and the joints squeak.

The heim joints all had grease fittings, but there's no provision for that with the urethane bushings. It's a lot more trouble to take the joints apart to apply a little grease between the bolt and the metal bushing than it would be to use a grease gun, so I'm asking what others do, if anything is done at all.

Thanks for your opinions.
Dorsey