PO installed BOI (blah) UCA and LCa on the rear of the car. I know I need to replace them eventually with MM but until now they will make due. When weight transfers to the rear like taking off from a stop I can hear them creak pretty good. The PO only put about 50 miles on them in 3 years so I am sure they need some lube. They all seem to have grease fittings. Will this help the noise some? Also should they be greased while loaded or unloaded? I have a generic parts store grease gun and also have something called green grease or something I heard was pretty good. I am assuming this will be ok for the poly bushings? Thanks for any help.