Rear Diff Capacity?

[Mossyoakglock]

I just got done changing the rear diff fluid in my 08 Silverado 4x4 w/ the G80. My owners manual said to to fill between .04 and .75" of the fill plug. So figured that I would go roughly in the middle and filled it to about 3/8 - 1/2 from the plug. I did the trick with an allen wrench and put a small piece of tape on it as a marker and filled the diff. The diff took right at 2 quarts. Does this sound about right? I also used a gasket I picked up from the dealer and a small bead around the outside edge of the gasket just in case. I used Mobil 75w-90 synthetic.

 

Does it sound like I did everything right? I feel like I did but I just want to double check. No harm in that right?

[txab]