The electric fan coming on after the car is shut off is a good thing.
After the engine is shutoff, the temperature underhood continues to climb and depending what where you are taking measurements, will peak 15 - 25 minutes later. This ages non-metallic parts much faster.
With a mechanical fan, there is no airflow after the engine stops, thus higher temperatures will be reached during a hot soak.
Now, if the electric fan is not sufficiently sized, or is being used in parallel and causes a restriction, then better off without.
I`m very well aware of the benefits and that the heat spikes after shut off...I am merely talking about the noise factor...and anytime a car travels over 30mph , no fan is needed...
Ok, but you discounted my other two comments, and didn't acknowledge the additional benefits. Cars run under 30mph quite a bit. For example when they are parked after running...
well, to be honest , those are not big benefits to me...and I dont like the noise that they make when just parked...several guys in my group have those, Drew and Blake for instance ,and I just dont get used to it.....personally I do drive under 30 too, but I try not to....
