Quote Originally Posted by mbeige View Post
I think the revving is only done with carbed units? Or something along that line.

If you have a turbo, let it idle for a few minutes before shutting it down. That way the turbo has a chance to cool down as well.
Yup, that's it alright. Mine is a turbo-diesel so I have the turbo timer to delay the shut-off for me especially if I'm in a hurry.