i knew that it should be 6, but am wondering why mine took 7. and according to the dipstick is not over full. could it be the angle that the truck sits at on the suspenion be making that muck of a difference. it sits about 4 inches lower in the front than in the rear, and i was on level ground. maybe the way the truck sits on its suspension make that big of a difference although i dont think so. any ideas at all.