This method would be hard on an ONroad car. but could be done by removing all of the droop limitations then adjusting the springs for 1mm less than max ride height then compress the chassis and without oil i the shocks and video the release. 60fps or better would help.

this just to get the spring rate balanced. once balanced when you change springs, change both to keep in balance.

Thicker oils will just delay the car's leanover (slow the side to side action down) which will yes lower traction initially then have the same one fully compressed. so in theory initially there would be less on corner entry