According to the manual, the ATF level should be 5 mm below the low mark on dipstick when at air temperature. I imaging this is because hydraulic fluids expand when heated and contract when cooled. I have the opposite: my level is at the full mark at operating temp, then rises about 2 inches over full mark after it sits overnight. It's as if the torque converter is draining into the pan overnight. The transmission is fine and doesn't leak.
Anyone have any thoughts on this? Thanx.