My fluid keeps reading way too high. I checked it hot. I checked it cold. I checked it after running through all gears. No one has added fluid. Is there any reason why it would read high and not be overfilled? Ex: not getting somewhere it needs to be so getting back into pan.
Are you checking the fluid level with the engine hot and idling?
Some transmission coolers are part of the radiator. If yours has a leak between the chambers coolant may be getting into the tranny fluid