So..I'm driving the jeep like any other day and out of no place comes this squeak...some real serious squeakage coming from what's got to be my heim joints on my upper or lower control arms in the rear. After I got me a BMT from Subway I said lemme jump up on the bumper and see if it squeaks..sure enough it did..but the girlfriend was no help to figure out where the squeak was coming from..and could she hop up and down on the bumper for me? noooo. so..i'm going to assume its the heim joints or some joint back there. Is it okay to grease them up? I never heard anyone do it and there is no rubber like on the stock ones or any grease fittings. I don't want to go gunking them up and cause a problem.