After every run in my TAD and it holds 18 quarts because that's what it takes to keep oil in the pan with 60 pounds of boost.
Some times we would keep the oil around for a second run like the next day after it cooled.
The car always got cool fresh oil to go along with new upper rod bearings for each run.

Like if we had to start the car a extra time in the pit's then the oil definitely got dumped after one run.

I raced TAD for 8 years and only started the car twice at the shop, always waited until we got to the track to start a fresh engine because of the fuel system being drained after each weekend and the cost of oil and everything else like bearings and spark plugs.