The Chrysler transmission engages the pump when in Drive so I don't think there would be much, if any pressure difference. Also that transmission is built to take the pressure. Highest pressure is in Reverse. The clutches would have no wear if a car is at a stop. Clutches get wear when there is a shift, when a heavy weight (car) is being accelerated, or down shifting in mountain driving, decelerating. Philippe Courant wrote: >Hi all, > >We're debating on our french forum about Automatic Transmission and >especially what to do when you stop (at a red light or "stop & go" heavy >traffic) for a while ? >1- Put the trans in N >2- Leave the trans in D >Some say you must put in N to avoid increase of ATF fluid, other say to >rest in D to avoid multiple engaging of clutches-band which can wear them.. > >I'll forward your opinions on my bulletin board > >Thanks > > > To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/