Change O&F for the first time, only took 5 quarts ?

[WSM370]

I let the old hot oil run out with oil cap off till I didn't see any drips. I did the same with filter. Then used one 5 quart container of Mobile 1 to refill, ran the car to operating temp, checked for leaks then let sit 30 min. and oil stick reads close to full or H on the stick ? Wait several more hours and same. I then had to run out for a total of 5 mile drive lots of stop and go a little open road, ran it like I always do - spirited and maybe one 0-60 blast. Oil temp hit 220. I pulled in garage popped hood so I'd check oil first thing in the am about 8 hours later, and it's still looks like its close or at the H ? I'm guessing thing should be ok & I'll continue to check it ? I thought it took 5 1/8 quarts of oil ???
Just wanted to make sure I'm not missing something, first 370Z ???
Any help or comments would be appreciated - Bill Miller