[Vwdiesel] Turbo cooldown

[Libbybapa at wmconnect.com]

Last weekend I picked up a diesel vanagon camper with a tossed rod.  I will 
be putting a 1.6 TD into it.  I went with a friend and towed it back with his 
Cummins TD.  Quite a truck.  He said that any time you drove it hard you should 
allow it to idle before shutting it down.  I'm assuming that is to prevent 
the oil from frying in the turbo.  I also assume that is true for the vw TD.  
How long should you idle before shutting down the motor? 
Andrew