Quote:
Originally Posted by so26
The spinning gears will stir the oil and genetrate some heat. How much not sure.
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Yes that's true, but not nearly as much as the heat generated by the frictional losses that comes with power transmission...by driving the car. It's the same thing as letting the engine idle, yes that will eventually warm up, but in the end your brakes, bearings, & differential can't get warm until you drive the car.