go to home depot and buy a can of white lithium grease. just ask them and they will show you where it is. use the little straw and spray the kit down. get into all the little crevices of the bushing as much as you can.
it works on my ingalls rear kit. you prolly have to do it like every 2 weeks, but its cheap and it works. if you drive through water a lot it might wash it off.
i got lazy, and the only time i do it now is if im taking a girl somewhere. so basically i never grease it up