View Single Post
      01-11-2013, 08:35 PM   #9
BavarianFanatic
Too much is never enough
United_States
453
Rep
3,068
Posts

Drives: Too Many
Join Date: Mar 2008
Location: SE PA

iTrader: (0)

An auto trans is comprised of a bunch of hydraulic clutches. It's completely decoupled unless you're spinning the motor fast enough to lock the torque converter. The act of "shifting" an automatic is redirecting the hydraulic fluid from one clutch pack to another.