+1 on letting the leafs droop. If you have a pressure washer it will help get the sand out between each leaf. blow the water out with a compressor and shoot some lithium.Brush some motor oil between the leaves. New or used oil doesn't matter. If you have time you can raise the frame and let the leaf springs droop, then apply some oil. Wipe excess.
No problem with a 3k jackOkay thanks man. And would a 3000lb jack be able to lift our trucks if its only the back end?
Did you jack from the frame? If you jack from the axle you will continue to compress the leaf springs. you want the wheel to be hanging and not have anything pressing up.So I jacked my truck up and the leaf springs don't droop...