2009 4.8 front and rear differential

[Sam617]

Hi y'all, just did my first change. My truck have about 90k miles. The rear was super easy. However, I only drain about .8 of a quart. Is this the right amount of oil for the rear differential?The front was a pain to get to the fill plug. For the front, I only get to drain about .5 quart. When I went to put fluid back it took about . 7 quart and fluid still didn't run off the fill hole. Does anyone know the actual capacity for the front and rear differential? Should I gotten more fluid from both differentail? Thanks, Sam