Catostrophic system failure in line to passenger's steer.

All fluid was gone. I saw 'safety' brake systems come in the late 60s in passenger vehicles, where steer and drive were different hydraulic circuits, later fwd seperated by 'X' configuration.

HD trucks did not go to safety (Think school bus- Yikes!) right away.

Did they remove the steer/drive reservoir septum just because it's a 9600 gvw truck???