penetrating oil is going to do nothing to help you here, the bolts have super strength loc-tite on them.
the proper way (gasp) is to do the adjustment with the truck level and tires on the ground, no jack. first loosen the 4 upper control arm to frame bolts, you do this so to not bind the upper arm when changing ride height, next get a tape measure and take primary measurements. then using a 13mm 6 point 1/2" drive socket and a good 1/2" ratchet tighten the bolts slowly equal turns on each side untill the height is where you want it, measure to level then tighten the 4 upper control arm to frame bolts.
this has been beat to death on this site and some do it one way, some do it other ways.
what ever you do dont bottom the bolts against the adjuster blocks and never use a air impact gun to tighten them!