Prothane spring hanger bushings TIGHT!!!

I always use synthetic disc brake grease on all my suspension parts and any other parts that move, wiggle or rotate including the shock bushings, window regulator mechanisms and anything else.

It lasts almost indefinitely, won't attack rubber or other materials, is inexpensive and has superior lubrication and anti-washout to virtually anything available.

Also, if memory serves, there are two sizes for the bushings. I recall having an issue with different sized bushings when trying to use e-body bushings in my a-body springs.