Manual vs Automatic Locking Hubs. I wanted the reliability and simplicity of the Warn Manual Locking Hubs. The vacuum hubs haven’t reliable disengaged in my experience. And I want the option to run the truck in 2Low. If you live in frigid climates and/or take the truck in and out of 4wd very frequently, maybe the original automatic hubs are a better option. #warnindustries #warnhubs #offroadlife #4wd #fordexcursion #superduty #lockinghubs #offroading #4x4life #trucknation | Freedom Worx