Overfilling can cause you to blow a seal in the axle. If my memory is correct, there is no vent on that axle. The increased amount of fluid means there is less air so more pressure on things as the axle heats up. Air will compress, fluid will not.
I doubt you hurt anything in the time you used it, but i would double check the proper way to check the fluid and suck out the extra.
I doubt you hurt anything in the time you used it, but i would double check the proper way to check the fluid and suck out the extra.