Do these trucks have a turbo cooling feature once you shut off the engine? Or should I be allowing my truck to idle for a bit to allow the turbo to cool before I turn it off?

 

 

Idling isn't necessary on watercooled turbochargers. On older engines that only relied on oil for cooling idling was necessary but not on the new watercooled turbos

 

Turbo "coking" is generally predominantly associated with oil cooled only turbos. Turbo timers usually took care of that issue or some nice/calm driving for the last few minutes prior to turning the car off accomplished the same.

With water and oil cooled, you really don't have the same issues. It isn't a bad idea to be mindful of how soon you will be turning off the truck and not beat on it for the last few minutes before that, but not required either. Look up the physics concept of convection and you might understand a bit better. The coolant actually keeps flowing through the engine until the temp of the turbo coolant matches that of the rest of the coolant throughout the system. So in essence, the truck is doing the job for you.

 

Thanks for the replies.. Makes sense and one less thing to worry about.

 

I always idle mine for a min or two if I have been running it hard, ex interstate driving or towing. Normal driving maybe 30 seconds on a hot day.

 

Depends on your driving. If the truck is working hard, i always let it cool for a couple minutes. If i was just cruising on the highway and i juat drove in my driveway slow, ill shut it right off.

even the manual on my Ram 2500, has guidelines on whether to cool the turbo off or not. I gotta check what kind of turbo its running.