If you go by the dipstick you will be just fine. In fact you can have the fluid level a half inch or more above the full mark on the stick with no problems.
Even at that level you probably will not see the fluid level through the filler opening, as it's still well below the joint where the main case meets the lift housing.
Even at that level you probably will not see the fluid level through the filler opening, as it's still well below the joint where the main case meets the lift housing.