bushing grease??

[94 Black GT]

what kind of grease do you guys use on your aftermarket rear control arms with polyurethane bushings that are equipped with zerk fittings. I saw prothane makes a special grease for urethane bushings..is it necesary or will all purpose grease work??
thanks guys
mike

 

[Gearbanger 101]

You’re supposed to use graphite Grease on polyurethane bushings. Anything else will squeak the moment the grease wears away a little.