Protecting your turbo - turning off the motor

[tacorancher]

I have read that you should idle for a minute before turning off your motor, especially after heavy load, to let the oil in the turbo drain out fully so it doesn’t cook inside the turbo. When it cooks in there and cannot drain, the oil loses life and the turbo can get clogged over time by coked oil. This all leads to a shorter life for the turbo. Is this true? If it is, how does this work exactly? Because when I idle my engine is already shut off automatically by the ECU as I drive a hybrid. Car care nut says to do this so it must be true, but I want to understand the idling part.

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