I have an NAA, Jubilee. The spin on filter will drain back only about a quarter of an inch on the dipstick after it sits for a long time. If my menory is correct, I only bought a 5 quart bottle of synthetic oil from Wal-mart. I have a splash left in the bottle because the spin on filter doesn't take a full quart. There was no need for me to buy extra oil, because my engine doesn't use oil. I went with synthetic oil because the filter drains back and takes 10-15 seconds after sitting to fill the filter and build oil pressure. I even use NAPA gold filter, still drains back. Removed filter to confirm it drains back.
If I remember, I'll measure the length of my dipstick tomorrow.
I would think if you put an extra quart of oil in engine, it might come out someplace.
I accidently overfilled a 13 hp honda engine and it smoked like crazy.