Allegedly now idling in the paddock means you are an asshole. According to FP. For some reason, it’s been declared that in order to not be an asshole, you are to shut off a car with hot oil and coolant (and likely brakes and brake fluid), rather than getting some more air over the fluid heat exchangers, and bring the car closer to normal operating temperature before turning it off. Image related, but isn’t my S4 (This one has too many pixels showing in the screen).