Originally Posted by BMWWW
The reason why there are turbo timers are because if you drive spirited, and then shut off the car right away, the oil in oil-cooled turbos will just boil and cook. Turbo timers keep the engine running, and keep the oil circulating to get a chance to cool down sufficiently. I'm not scientist, I don't have a thermostat hooked up to the oil temps, but it's always good practice (certainly with older turbo'ed cars), to lay off the go pedal a few minutes before reaching your destination/sit in your car while checking your phone.
I know how they work. Have you ever heard of one seizing from overheating?