Question about Front diff fluid change using ramp

[zhonghuihe]

so i ve been reading mud for some time for maintenance that i can do on my car.
I have done the rear diff and transfer case fluid already.
but i ve read that when doing the front diff, it is better to use ramps to raise the front of the truck
so my question is when the front is raised when fluid is added until it dripping out of the fill hole, but when the truck is off the ramp, then the fluid level will actually lower then the fill hole, is that gonna cause not enough fluid in the front diff?
thanks

 

[Sandroad]

Here's a thread in the FAQs that gives a good procedure for the front diff.

Front Differential Fluild Change